Question

plz solve it...
its very important

Answer 1

sinA = cosA

sinA / cosA = 1

tanA = 1

tanA = tan45

A = 45

answer is 45 degree..

Answer 2

Consider Theta as x

Since we know that

Sin x = Cos(90-x )

but sinx = cos x .......( given)

and sin45° = 1/√2

which is equal to cos 45°

Thetha = 45°