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Formula for trigonometric ratios of compound angles |
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Answer» Answer: Step-by-step EXPLANATION: sin(A + B) = SINA cosB + coA sinB sin(A – B) = sinA cosB – COSA sinB cos(A + B) = cosA cosB – sinA sinB cos(A – B) = cosA cosB + sinA sinB tan(A + B) = tanA + tan B/ 1 - tan A tanB tan(A – B) = tanA - tan B/ 1 + tan A tan B sin(A + B) sin(A – B) = sin2A – sin2B = cos2B – COS2A. cos(A + B) = cos(A – B) = cos2A – sin2A – sin2B = cos2B – sin2A. |
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