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Brilliant video, thank you! Helped a lot ahead of LC P2!
Glad to hear that it was helpful! Best of luck in all your exams!
For pg. 15 the products to sums and differences should we always put a half in front if there is no 2
Yes - you can think of it as dividing both sides of the identity by 2. Dividing by 2 is easier to work with when written as multiply by a half.
@ 26:30 why didn’t you multiply COS(A) by the 2SIN(A)
Shouldn’t it be 2sinacosa then cos^2
When you multiply Cos(A) by 2Sin(A) the answer is 2CosASinA or 2SinACosA. That is as simple as it goes.
I think you are mixing it up with how it would work if there was a plus in the middle e.g. (2SinA + CosA)(CosA)... What we have is one term 2SinACosA. Does this answer your question?
@@MissSarahTallon ohhh that makes so much sense thank you !
Brilliant video, thank you! Helped a lot ahead of LC P2!
Glad to hear that it was helpful! Best of luck in all your exams!
For pg. 15 the products to sums and differences should we always put a half in front if there is no 2
Yes - you can think of it as dividing both sides of the identity by 2. Dividing by 2 is easier to work with when written as multiply by a half.
@ 26:30 why didn’t you multiply COS(A) by the 2SIN(A)
Shouldn’t it be 2sinacosa then cos^2
When you multiply Cos(A) by 2Sin(A) the answer is 2CosASinA or 2SinACosA. That is as simple as it goes.
I think you are mixing it up with how it would work if there was a plus in the middle e.g. (2SinA + CosA)(CosA)... What we have is one term 2SinACosA. Does this answer your question?
@@MissSarahTallon ohhh that makes so much sense thank you !