Question

If sin A = cos A, then the angle A is equal to
(A) 30°
(B) 60°
{C) 0°
(D) 45°
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Answer 1

Answer:

sin A= cos A

Sin 45= 1/root 2

Cos 45= 1/root2

Thus, A= 45

Step-by-step explanation:

Answer 2

option (d)

The value of A is 45°

Step-by-step explanation:

if

sin A = cos A

then

sin A = sin (90° - A)

A= 90°-A

A+A = 90°

2A = 90°

A = $\frac{90}{2}$

A = 45°

hence , The value of A is 45°

#Learn more:

If angle a is equal to angle b is equal to 45 verify that sin a + b is equal to sin a cos b + cos a sin b

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