Question

compond Angeles formulas

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Answer 1

Answer:

• sin (A + B) = sin A cos B + cos A sin B
• sin (A – B) = sinA cosB – cosA sinB
• cos (A + B) = cosA cosB – sinA cosB
• cos (A – B) = cosA cosB + sinA cosB
• tan (A + B) = [tanA + tanB] / [1 – tanA tanB]
• tan (A – B) = [tan A – tan B] / [1 + tan A tan B]
• sin(A + B) sin(A – B) = sin2 A – sin2 B = cos2 B – cos2 A.
• cos(A + B) cos(A – B) = cos2 A – sin2 A – sin2 B = cos2 B – sin2 A.