Good afternoon sir I have a question here sir What i did here is I used the cos rule to get the missing length Close to 83 degrees and calculated the area and I got 9.85 So my question is, is my method correct or I should always have done it like you??
Thanks for the video but before you solved the last question I calculated using Cosine Rule and got the answer of 10.13 units area squad ,is that still valid if being marked?
I have noticed that when it comes to the cos rule, when there are numbers with variables, the answers tend to be a little different. If 3h is squared, that will give you 9h squared because the 3h was in brackets. I dont know if you can understand.
Hi there How come with the last example I did it with the area rule and then I wanted to test the cosine rule at the end and I don’t get the answer how come 😩 so which way would be correct
To get 41,2 you'll need to work out the angle of C by using the sum of angles in a triangle and you do that be adding up everything=to 180 and then you simplyfy Hope that was helpful🙃
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thank u so much this really helped I'll be sure to practice this every day
god did !!!!!!! kevin with maths rizz
sir you are a lifesaver!!
Happy to help :) Good luck!
Good day sir your videos are so helpful, may u please do a video on; MEASUREMENT: TSA & VOLUME
Struggled with this but thank u
Pleasure Vhusani :)
i feel like they are too short but thanks alot the videos are very helpfull
Excellent video! Well explained: thank you
Noticed u can cross multiple and still get the correct answer
In the ambiguous case, aren't you supposed to subtract both 55.8 and 83 because both angles are within the triangle
Thanks braa
Pleasure!
Good afternoon sir
I have a question here sir
What i did here is I used the cos rule to get the missing length Close to 83 degrees and calculated the area and I got 9.85
So my question is, is my method correct or I should always have done it like you??
He does again 👏🎉
Hey Kevin sir, when you do question, with out switching it around it gives me 82.78 and now I’m confused all over again
Thanks for the video but before you solved the last question I calculated using Cosine Rule and got the answer of 10.13 units area squad ,is that still valid if being marked?
I did the same thing
Good evening so since the area rule is including the sine doe this mean that u might apply only the sine rule?
How did you get 41,2 degrees
You can use the sum of angles in a triangle by adding everything up and equalling it to 180° and than work out c^(angle C)
Hope that was helpful
I have noticed that when it comes to the cos rule, when there are numbers with variables, the answers tend to be a little different. If 3h is squared, that will give you 9h squared because the 3h was in brackets. I dont know if you can understand.
Thanks
Pleasure!
Guyz can somebody tell me which test/exam this topic appears in
Paper 1
Hi there
How come with the last example I did it with the area rule and then I wanted to test the cosine rule at the end and I don’t get the answer how come 😩 so which way would be correct
All methods should work out if done correctly. Send me a picture of your working out at kevinmathscience@gmail.com and I can check it out for you :)
How did you get 41,2
To get 41,2 you'll need to work out the angle of C by using the sum of angles in a triangle and you do that be adding up everything=to 180 and then you simplyfy
Hope that was helpful🙃