Question

If sin (2A + 45°) = COS (30
- A), find A​

Answer 1

Answer:

sin(2A+45° ) = cos(30°-A)

or, sin (2A+45°) =sin {90°- (30°-A)}

or, 2A+45°= 60°+A

or, A = 60°-45°

or, A = 15°

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