InterviewSolution
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InterviewSolution
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If A = B = 60°, verify that(i) cos (A − B) = cos A cos B + sin A sin B(ii) sin (A − B) = sin A cos B − cos A sin B(iii) tan A-B=tan A-tan B1+tan A tan B |
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Answer» If A = B = 60°, verify that (i) cos (A − B) = cos A cos B + sin A sin B (ii) sin (A − B) = sin A cos B − cos A sin B (iii) |
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