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Solution - Trigonometric Ratios of Complementary Angles

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Question

If A, B and C are interior angles of a triangle ABC, then show that `\sin( \frac{B+C}{2} )=\cos \frac{A}{2}`

Solution

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Reference Material

Solution for concept: Trigonometric Ratios of Complementary Angles. For the course 8th-10th CBSE
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