Trigonometrymedium · Past Paper
What is sin(A + B) + sin(A - B) equal to?
A2 sin A cos B
B2 cos A sin B
C2 sin A sin B
D2 cos A cos B
✓ Correct Answer: A — 2 sin A cos B
This is the product-to-sum identity formula.
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✓ Correct Answer: A — 2 sin A cos B
This is the product-to-sum identity formula.
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