Stuff on "Altitude on Hypotenuse" Theorem! Mario's Math Tutoring: ruclips.net/video/Wqhj1pesd_8/видео.html Mathematical Way: www.mathematicalway.com/mathematics/geometry/geometric-mean-theorem/
Thank you so much for all these great videos! I was stuck at 680 in math but after watching your videos I got a 740 in June. Now I'm taking the August exam and aiming for 800.
Awesome! I hope it goes super well. Don't forget to let me know how you did on Score Release Day by stopping by the Community Tab: www.youtube.com/@Tutorllini/community Best of luck!
Awesome, Mitansh! Do make sure you let me know how you do on your exam once you get scores back. The Community Tab is a great place to do that: www.youtube.com/@Tutorllini/community Best of luck!
@@Tutorllini I'l make sure to do that. I got 730 on english and 690 on math on the Bluebook practice test #4 I took 2 weeks ago, so I'm hoping to cross the 750 barrier for math. I'm taking the test on August 24 so hopefully I can bring my score up.
@@theastrotheorist Nice! Definitely check out all of my other playlists. When you get your SAT score back you can inform me via the Community Tab: www.youtube.com/@Tutorllini/community Best of luck - you got this!!!
thank you so much for this! youre like the only youtuber who shows how to use desmos lol! but for mod 2 Q8 (the first question u covered in the vid) im still confused as to how you got 1/6
Hey thanks! Did you watch my 3 shorts that cover that equation and what it means? Exponentials + Time #1: ruclips.net/user/shortsE5qE-pBrHrQ Exponentials + Time #2: ruclips.net/user/shortsuRuBtP5P7n8 Exponentials + Time #3: ruclips.net/user/shortsvFw0qTT14K8
@@frances3742 Sure thing! You can come back here and ask a question and I will try to answer .... but this is really hard to explain over text. See this Desmos graph and move the slider for n. It will help you grasp what is happening: www.desmos.com/calculator/6z8mgtmywm
For question no. seventeen I plugged in one for d but accidentally solved for the y-intercept and got answer choice d but I got a after I realised my error.
Nice work! Be careful about plugging in 0 or 1 as a constant. 1 especially. x x^2 1/x are all the same when you make x=1 (because 1 has many special properties). When using positive constants to guess and check go with 2, 3, 4, 5.... so you don't run into that issue. www.desmos.com/calculator/lnx8w5zekq
Understood. I know that but as I saw a positive constant I immediately went for one although I usually don't but it worked out in the end. The right by left equals the height squared formula to find DC in the triangle question got me. I didn't know that formula before so my thanks for that but is there any other way to approach that question. I was initially thinking about 30-60-90 and 45-45-90 triangles and the corresponding lengths but it relied on too many assumptions regarding if the line in the middle cut the top right angle into either a forty-five or thirty/sixty degree angle.
@@LesterOrie-mj6hq See the pinned comment to learn more about Altitude-on-Hypotenuse. Many ways to do it. Here's one. First find BD = 11 like we did in the video. Then recognize that △ADB is similar to △ABC by the AA criterion. Set up a proportion to solve for AC. Then take away 121/3 from AC to get x.
Yup! You can use inverse trig like here: www.desmos.com/calculator/vimkzyg3si Just keep in mind that it is not in the CB syllabus (so never intended). Studying inverse trig prob is not worth it. You can also read one of my other replies for how to set it up using similarity. The concept is the 3 triangles (left, right, big) are all similar to one another. I like to track the angles using colors - to make it easier to see the corresponding sides. Here is a similar one I solved that way: ruclips.net/video/MaqvW21Dnog/видео.html See if that gets you started. I hope this helps!
Hi! Here are the videos I was referring to. Exponentials + Time: Forward ruclips.net/user/shortsE5qE-pBrHrQ Exponentials + Time: Backward ruclips.net/user/shortsuRuBtP5P7n8 Exponentials + Time: Units ruclips.net/user/shortsvFw0qTT14K8 I hope this helps!
For the Practice test 3 q8 m2 question is it ok to do arc cos to find the angle of A and then use it to find x since they are similar triangles? I ended up using tan and got x = 3.00101
Hey Ravi! You mean like this? www.desmos.com/calculator/zqcqxyhctb nice thinking! It certainly works. My only caution to you is that College Board NEVER expects you to know inverse trig functions. So, if you get too used to this, it could come back to bite you on a conceptual question (which could require you to recognize the 3 triangles are similar to one another). I hope this helps!
For 17 I didn’t distribute 6d to (20x+21) and couldn’t get the right answer. Could you still solve this without distributing? Could you just divide both sides by 6d and carry on from there?
Great question! I agree this is the more logical thing to do. I figured out the faster way by peeking at the answer choices. It works both ways (as long as you know how to add/subtract rational expressions). See below: drive.google.com/file/d/1jGAtFUhAHLAurzS6L-PTQeJZ3LKNUgC7/view?usp=sharing
I have not seen one yet where understanding reflections is important. Keep in mind Khan Academy DSAT Math is not very indicative of what you will see on the exam. I would suggest gaining a deep understanding of FUNCTION TRANSLATIONS (other types of transformations you do not need to know as well). I hope this helps! ruclips.net/video/yT8Zka8UlJQ/видео.html
This video goes over the steps for Completing the Square in more detail. You always want to divide out by the coefficient of x^2/y^2 first: ruclips.net/user/shortsZZreql_VuFc
@@fortnitesweatkid at 09:40 I say "we are gonna divide the whole thing by 8". I didn't forget - pressed for writing space and I thought saying it would be good enough. As I said, I would just do these question types (expanded circle equations) on Desmos anyway so learning Completing the Square might be a waste of time.
@@Tutorllini yeah learning completing square does seem kinda useless because we aren’t given the value of p but writing them by hand and knowing what to do with the questions and using Desmons is convinent
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Stuff on "Altitude on Hypotenuse" Theorem!
Mario's Math Tutoring:
ruclips.net/video/Wqhj1pesd_8/видео.html
Mathematical Way:
www.mathematicalway.com/mathematics/geometry/geometric-mean-theorem/
Thank you so much for all these great videos! I was stuck at 680 in math but after watching your videos I got a 740 in June. Now I'm taking the August exam and aiming for 800.
Awesome! I hope it goes super well. Don't forget to let me know how you did on Score Release Day by stopping by the Community Tab:
www.youtube.com/@Tutorllini/community
Best of luck!
Thank you so much for your math videos, i had a 120 point improvement on my math by using your entire course
Awesome, Mitansh! Do make sure you let me know how you do on your exam once you get scores back. The Community Tab is a great place to do that:
www.youtube.com/@Tutorllini/community
Best of luck!
@@Tutorllini Thank you !
I havent started the video yet but ik its about to be fire 🔥
btw I was just introduced to your channel yesterday and its pretty cool
thanks mate! I hope the channel helps you reach your goal. Keep me posted on your progress!
@@Tutorllini I'l make sure to do that. I got 730 on english and 690 on math on the Bluebook practice test #4 I took 2 weeks ago, so I'm hoping to cross the 750 barrier for math. I'm taking the test on August 24 so hopefully I can bring my score up.
@@theastrotheorist Nice! Definitely check out all of my other playlists. When you get your SAT score back you can inform me via the Community Tab:
www.youtube.com/@Tutorllini/community
Best of luck - you got this!!!
@@Tutorllini Thanks!
thank you so much for this! youre like the only youtuber who shows how to use desmos lol! but for mod 2 Q8 (the first question u covered in the vid) im still confused as to how you got 1/6
Hey thanks! Did you watch my 3 shorts that cover that equation and what it means?
Exponentials + Time #1:
ruclips.net/user/shortsE5qE-pBrHrQ
Exponentials + Time #2:
ruclips.net/user/shortsuRuBtP5P7n8
Exponentials + Time #3:
ruclips.net/user/shortsvFw0qTT14K8
oh! thank you so much! ill watch them now :)
@@frances3742 Sure thing! You can come back here and ask a question and I will try to answer .... but this is really hard to explain over text. See this Desmos graph and move the slider for n. It will help you grasp what is happening:
www.desmos.com/calculator/6z8mgtmywm
Thanks for your content. It is really helpful.
🔥🔥🔥Thanks man really appreciate ur vid
You're welcome!
For question no. seventeen I plugged in one for d but accidentally solved for the y-intercept and got answer choice d but I got a after I realised my error.
Nice work! Be careful about plugging in 0 or 1 as a constant. 1 especially.
x
x^2
1/x
are all the same when you make x=1 (because 1 has many special properties). When using positive constants to guess and check go with 2, 3, 4, 5.... so you don't run into that issue.
www.desmos.com/calculator/lnx8w5zekq
Understood. I know that but as I saw a positive constant I immediately went for one although I usually don't but it worked out in the end.
The right by left equals the height squared formula to find DC in the triangle question got me. I didn't know that formula before so my thanks for that but is there any other way to approach that question. I was initially thinking about 30-60-90 and 45-45-90 triangles and the corresponding lengths but it relied on too many assumptions regarding if the line in the middle cut the top right angle into either a forty-five or thirty/sixty degree angle.
@@LesterOrie-mj6hq
See the pinned comment to learn more about Altitude-on-Hypotenuse.
Many ways to do it. Here's one.
First find BD = 11 like we did in the video.
Then recognize that △ADB is similar to △ABC by the AA criterion. Set up a proportion to solve for AC. Then take away 121/3 from AC to get x.
Keep going Tutto💯💯
Thanks Talat!
Is there another way to do the triangle questions other than the Altitude hypotenuse method? Like using trigonometry for example?
Yup! You can use inverse trig like here:
www.desmos.com/calculator/vimkzyg3si
Just keep in mind that it is not in the CB syllabus (so never intended). Studying inverse trig prob is not worth it.
You can also read one of my other replies for how to set it up using similarity. The concept is the 3 triangles (left, right, big) are all similar to one another. I like to track the angles using colors - to make it easier to see the corresponding sides. Here is a similar one I solved that way:
ruclips.net/video/MaqvW21Dnog/видео.html
See if that gets you started. I hope this helps!
Hey, do you have a concept video on the exponential growth topic. The first question one? The ottecanto video
Hi! Here are the videos I was referring to.
Exponentials + Time: Forward
ruclips.net/user/shortsE5qE-pBrHrQ
Exponentials + Time: Backward
ruclips.net/user/shortsuRuBtP5P7n8
Exponentials + Time: Units
ruclips.net/user/shortsvFw0qTT14K8
I hope this helps!
Tq so much for this
You're welcome #10,000!
🔥🔥🔥
😎
For the Practice test 3 q8 m2 question is it ok to do arc cos to find the angle of A and then use it to find x since they are similar triangles? I ended up using tan and got x = 3.00101
Hey Ravi! You mean like this?
www.desmos.com/calculator/zqcqxyhctb
nice thinking! It certainly works. My only caution to you is that College Board NEVER expects you to know inverse trig functions. So, if you get too used to this, it could come back to bite you on a conceptual question (which could require you to recognize the 3 triangles are similar to one another).
I hope this helps!
Wait I just noticed it says College Bored in the bottom left corner 💀😂
Bro I'm gonna put a joke on the last question of my next video - be on the lookout - thanks for having a sense of humor 😂
@@Tutorllini I'll definitely be on the lookout
some of the questions are pretty easy
I forgot to mention for 17 I also simplified and got (-13-63d)/60d which was the simplified version of answer choice A. Why is it not simplified?
Sorry, I am not a psychometrician. You'd have to ask College Board this question. Sometimes the answers are simplified and sometimes they aren't.
For 17 I didn’t distribute 6d to (20x+21) and couldn’t get the right answer. Could you still solve this without distributing? Could you just divide both sides by 6d and carry on from there?
Great question! I agree this is the more logical thing to do. I figured out the faster way by peeking at the answer choices. It works both ways (as long as you know how to add/subtract rational expressions). See below:
drive.google.com/file/d/1jGAtFUhAHLAurzS6L-PTQeJZ3LKNUgC7/view?usp=sharing
Does the digital SAT asks questions on reflection of function? I saw some when practicing non linear functions in khan academy.
I have not seen one yet where understanding reflections is important. Keep in mind Khan Academy DSAT Math is not very indicative of what you will see on the exam. I would suggest gaining a deep understanding of FUNCTION TRANSLATIONS (other types of transformations you do not need to know as well). I hope this helps!
ruclips.net/video/yT8Zka8UlJQ/видео.html
Beast
I got tense 😢
how did you get -56p^2?
divided everything by 8
This video goes over the steps for Completing the Square in more detail. You always want to divide out by the coefficient of x^2/y^2 first:
ruclips.net/user/shortsZZreql_VuFc
@@Tutorllini oh I get it now you forgot to show the divide by 8 and get -56p^2 lol
@@fortnitesweatkid at 09:40 I say "we are gonna divide the whole thing by 8". I didn't forget - pressed for writing space and I thought saying it would be good enough. As I said, I would just do these question types (expanded circle equations) on Desmos anyway so learning Completing the Square might be a waste of time.
@@Tutorllini yeah learning completing square does seem kinda useless because we aren’t given the value of p but writing them by hand and knowing what to do with the questions and using Desmons is convinent
im cooked