Question

If sin A =cos A, 090 , then the angle A is equal to 30,60,0,45

Answer 1

Answer:

sin A = cos A

=> sin A = sin (90 - A)

=> A = 90 - A

=> 2A = 90

=> A = 45°

Formula used:

cos Ø = sin (90 - Ø)

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Answer 2

Answer:

$= 45$

Step-by-step explanation:

$\sin(a) = \cos(a) \\ = \sin(a) = \sin(90 - a) \\ = a = 90 - a \\ = a + a = 90 \\ = 2a = 90 \\ = a = \frac{90}{2} \\ = a = 45$