Question

11. If sin A = cos A then the value of sin 2 A =​

Answer 1

Answer:

sin(2A) = 1

Step-by-step explanation:

if sin(A) = cos(A)

then, tan(A) = 1

which makes A is equal to 45°

therefore, 2A = 90°

sin(2A) = 1

Answer 2

Answer:

2 sin^2 A

Step-by-step explanation:

sin 2A = 2 sin A cos A

If sin A = cos A then

sin 2A = 2 sin A sin A =  2 sin^2 A.