Question

3.
If sin A = cos A, O SA < 90°, then the angle A is equal to
(A) 30°
(B) 60°
0°
(D)
45°​

Answer 1

(D) 45°

Step-by-step explanation:

the only condition which satisfies sin A= cos A is

45°

because,

$\sin(45°) = \cos(45°) = \frac{1}{ \sqrt{2} }$

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