Question

If sin A=cos A, then the value of A is

Answer 1

Given ;

• sinA = cosA
• cos(90-A)° = cosA. (using sin(90-θ) = cosθ)
• Thus by comparing both the sides;
• 90 - A = A
• 90 = 2A
• A = (90/2)°
• A = 45°

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