Trig Identities
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- Опубликовано: 19 сен 2024
- This trigonometry video tutorial discusses common trig identities and formulas such as the pythagorean identites, reciprocal identites, quotient identities, even odd identities, cofunction identities, double angle formulas, half angle formulas, sum and difference identities, power reducing formlas, product to sum identities, and sum to product identities.
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Trigonometry - Basic Introduction: • Trigonometry
Introduction to Angles: • Introduction to Angles
Radians and Degrees: • Radians and Degrees
What Exactly Is a Radian? • Trigonometry - What Ex...
Coterminal Angles: • Coterminal Angles In R...
Decimal Degrees to DMS: • Decimal Degrees to DMS...
Arc Length of a Circle and Sector Area: • Arc Length of a Circle...
Linear Speed and Angular Velocity: • Linear Speed and Angul...
Clock to Angle Problems: • Clock Aptitude Reasoni...
The Unit Circle: • The Unit Circle, Basic...
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Reference Angles: • How To Find The Refere...
The Six Trigonometric Functions: • The Six Trigonometric ...
How To Solve Right Triangles: • Trigonometry - How To ...
Reciprocal Identities: • Reciprocal Identities ...
Quotient Identities: • Quotient Identities - ...
Even and Odd Trigonometric Identities: • Even and Odd Trigonome...
Pythagorean Identities: • Pythagorean Identities...
Trig Functions - Periodic Properties: • How To Evaluate Trigon...
Trigonometry For Beginners: • Trigonometry For Begin...
The Exact Value of Trig Functions: • How To Find The Exact ...
Special Right Triangles - 30 60 90: • Special Right Triangle...
Special Right Triangles - 45 45 90: • Special Right Triangle...
Cofunction Identities: • Cofunction Identities ...
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Angle of Elevation Problems: • Angle of Elevation and...
Evaluating Trig Functions Given a Point: • Evaluating Trigonometr...
Exact Value of 5 Remaining Trig Functions: • How To Find The Exact ...
Evaluate Trig Functions - Reference Angles: • How To Use Reference A...
How To Graph Trig Functions: • Graphing Trigonometric...
How To Graph Sine and Cosine: • How To Graph Trigonome...
Evaluating Inverse Trig Functions: • Evaluating Inverse Tri...
Finding The Missing Side of a Triangle: • How To Calculate The M...
Finding The Missing Angle of a Triangle: • How To Calculate The M...
Two Triangle Trigonometry Problems: • How To Solve Two Trian...
Bearings Vs Direction - Word Problems: • Bearings vs Direction ...
Two Triangle Problems - More Examples: • Trigonometry - How To ...
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Verifying Trig Identities: • Verifying Trigonometri...
Trigonometry Final Exam Review: • Trigonometry Final Exa...
Trigonometry Formula Sheet: bit.ly/47diggI
Trigonometry For Beginners: ruclips.net/video/PUB0TaZ7bhA/видео.html
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Full 2 Hour Trig Final Exam Review: ruclips.net/video/yyg1X8M4IKs/видео.html
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@@inspirationalroseswashere..bro what is hard about this i love simplifying tri equations with idenities 😋
@@panthusbg626 i’ll assure you that one month later I have returned stronger than ever 🔥‼️
Fought the whole semester to keep my A, this is what's going to blow it for me. This stuff makes absolutely zero sense without a reference sheet or something.
Hit them flash cards
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couldnt be even more perfect, literally learned about trig identities in class today and didnt understand it. immaculate timing
bro this trig stuff is so fukin hard
@@tufasteel2329 I swear it’s making me lose hope I can only do math if I get the logic but what’s the logic here…
@@Askechad same my other classmates do it so fast and I’m here trying
Memorize this bc I’m in college and having to come back to review this because I forgot most of them
@@whyhaydenDo not ever memorize, it's better to understand
I'm actually cooked bro
LMFAOAO FR
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@@rplaysdemgamez3746 I know nothing man my test is in an hour
same
@@butter-oq6yz sheez my test at 5:30
bruh literally two minutes in and you already gave me the best way to remember sin, cos, and tan. wow ur a legend
Thanks, man. Been cramming right before finals trying to relearn everything, and this channel has been a life saver. Everything is explained so clearly and simply it makes trig seem easy.
This channel is by far my favorite RUclips channel to learn Math. Thanks for making these videos. I can only imagine the hours and effort you put in.
30,60,90 and 45,45,90. The good ol' Right triangle basics. Your channel helped me out quite a bit in my trig class.
the timing of this video is actually perfect. I have a test tomorrow and I need to know my trig identities,
Bro literally my teacher only talks about donkeys in class. I mean literal donkeys. And yet I’m supposed to know this? This man has SAVED me
@nomant7 yeah they should enlighten us
Donkey A and Donkey B are walking toward each other on a dirt road. Donkey A starts from the barn, 15 miles away from the meeting point, at 1:00 PM. Donkey B starts from the orchard, 10 miles away from the meeting point, at the same time, 1:00 PM. Donkey A walks at a speed of 3 miles per hour, while Donkey B walks at a speed of 2 miles per hour. At what time will Donkey A and Donkey B collide?
@@wege8409 To determine the time when Donkey A and Donkey B collide, we can use the formula:
\[
\text{Time} = \frac{\text{Distance}}{\text{Combined Speed}}
\]
### Step 1: Calculate the combined speed
- Donkey A's speed: 3 miles per hour
- Donkey B's speed: 2 miles per hour
- Combined speed: \( 3 \text{ miles per hour} + 2 \text{ miles per hour} = 5 \text{ miles per hour} \)
### Step 2: Calculate the total distance between them
- Donkey A starts 15 miles away from the meeting point.
- Donkey B starts 10 miles away from the meeting point.
- Total distance: \( 15 \text{ miles} + 10 \text{ miles} = 25 \text{ miles} \)
### Step 3: Calculate the time it takes for them to collide
\[
\text{Time} = \frac{25 \text{ miles}}{5 \text{ miles per hour}} = 5 \text{ hours}
\]
### Step 4: Determine the collision time
Since they both start at 1:00 PM, they will collide 5 hours later:
\[
1:00 \text{ PM} + 5 \text{ hours} = 6:00 \text{ PM}
\]
So, Donkey A and Donkey B will collide at **6:00 PM**.
@@wege8409 Let's break this down step by step:
1. Donkey A starts 15 miles away from the meeting point and walks at 3 miles per hour. To find the time it takes for Donkey A to reach the meeting point, divide the distance by the speed:
15 miles / 3 miles per hour = 5 hours
1. Donkey B starts 10 miles away from the meeting point and walks at 2 miles per hour. To find the time it takes for Donkey B to reach the meeting point, divide the distance by the speed:
10 miles / 2 miles per hour = 5 hours
1. Since both donkeys start at the same time (1:00 PM) and take the same amount of time to reach the meeting point (5 hours), they will collide at:
1:00 PM + 5 hours = 6:00 PM
So, Donkey A and Donkey B will collide at 6:00 PM.
I have a trig exam on this exact content tomorrow, big praise.
This video can help you with your Trig final exam:
ruclips.net/video/OAsbx4TEnL0/видео.html
thnks i love this chanel@@TheOrganicChemistryTutor
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I studied all this with great interest while studying in college. But now after 13 years it was very difficult to recollect. So when I go for an interview for the position of a mathematic teacher to answer the trigonometric functions was a difficult task. But this video helped me to remember all the trigonometric functions. It is really helpful for me. Thank you so much.
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Though my test was on Monday, your previous video for trig identities helped, I'll make sure to watch this one too
more helpful than what any teacher has done so far
Bro right after my trig unit just ended. But I got the pre-calc final. Thanks for uploading! You da man. Wish me luck!
This video can help you with your Pre-calculus final exam:
ruclips.net/video/Tj-V6KnwM5w/видео.html
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You covered just about everything here, nice. Got my final for pre-calc tomorrow
why do you not explain where are these coming from 11:40
Next year ill be taking calc for my senior year in high school so i decided to put in the hours this summer. i am 8 mins into this video i can feal an increasing pressure in my skull and that's a good thing cause am absorbing the information. But its unreal its all of this is packed into a
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how do u know when to apply a trig identity? is it necessary to apply an identity everytime u see one, or are there times where leaving the trig expression just as it is is better than applying an identity?
Very thorough and organized!
15:44 I love how you say let me say that again
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this is already great but would be even better with a visual representation on the unit circle. But thanks for saving my grades tomorrow!
14:07 u can use formula of (a+b)(a-b) =a² - b²
Thank youuuuuu 🥹
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Your videos are an absolute godsend, but that red dot was soooooooo distracting. 😞
I actually needed to watch this video For trigonometric Integrals It's a good review for that and also In polar coordinates
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I suggest changing the background to more like gray so it is easy on the eyes . Btw appreciate your dedication Man :)
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I was getting frusterated when he was bout to skip explaining cos20=cos^20-sin^20, then he did, and I was relievedddddd
I really needed this. Thank you!!
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i have an ib math external in 1 month and I find the subject hard i need help
Thanks bro I could use this for my calculus 1
Pls can u show how to calculate antilog in fx calculator
You have to live this to have this locked in your memory…😢
Stop reading comments and concentrate 😅
the goat
If I don’t pass trig this semester…my dad’s gonna shit in my mouth
Thanks really a good teacher❤
I think you interchanged the tan and the cot in the beginning on the video, please kindly check.
Thank you very much teacher!
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Lol Im binge watching every trig derivation vids for my upcoming midterm exam
Thanks a lot for this lesson 😊
nice video,well explained
coscosb = 1/2 [ cos (a+b) + cos (a-b) ]
21:40
It's the first tutorial of your's that I didn't get anything🤒🤒🤒
Please go over picards methods
lovely explainations. Thank you so much.
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I can handle any mathematics up to calc 3, but I still get these trig identities wrong. I have got to figure out a system to really commit these to memory because I should not be having this problem.
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no
What's the best way to get a tan? Having the Sun (Sine) over the coast (Cos)!
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Last minute studying for a placement test and I haven’t had math in over a year 👍
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The link to the practice problems doesn't seem to work 😢
Whats the difference between identity and formula 🤔
how did you get so knowledgeable??
this video is very helpful but the sound of this video is not clearly and have a low sound
At 10:04 isn’t the sin of 45 degrees equal to 1/root(2) ? Please feel free to correct me or to explain how he got root(2\2). Thanks :)
I watched one of his videos, you rationalise by multiplying 1/rt(2) by rt(2/2), hope this helps anyone who made the same mistake I did.
Tangent
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Where can I find the exercises or example of this topic?
thank you