Question

(2) If Sin A = Cos A, then the value of Ais
(A) 0° (B) 30° (C) 45°
(D) 90°​

Answer 1

Given

SinA = cosA

SinA = Sin (π/2 - A)

A = π/2 - A

2A = π/2

A = π/4

So A = 45°

Option C