Question

I am not able to understand how here sin(90°-2beta )is equal to cos2beta please explain it. ​

Answer 1

Answer:

we can use these formulas to solve such questions.in this above solution following formula is used,

sin(90°-A)=cos A

Answer 2

Answer:

The answer is given below

Step-by-step explanation:

we can use these formulas to solve such questions.in this above solution following formula is used,

sin(90°-A)=cos A