Question

Express cosº A+sinº A in terms of sin 2A.​

Answer 1

Answer:

Use the identities

Step-by-step explanation:

then solve it

Answer 2

sin (A + B) = sin A cos B + cos A sin B

Now, putting B = A on both sides of the above formula we get,

sin (A + A) = sin A cos A + sin A cos A

⇒ sin 2A = 2 sin A cos A