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If sin3teta = cos2teta then find cot 5 teta /2 |
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Answer» Step-by-step EXPLANATION: SIN 3theta = COS (90° - 2theta) sin 3 theta = sin 2 theta sin 3theta - 2theta form =2 cos (3 theta+2theta) /2 . sin (3 theta-2theta) /2 =2 cos 5theta /2 . sin 1 theta/2 = cot 5 theta / 2 hence proved |
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