sin2A+sin2B+sin2C=???
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sin 2A + sin 2B + sin 2C = 4 sin A sin B sin C
#. - If A, B, C are the angles of a triangle; show that
i) (tan A - cot B) = cos C sec A csc B.
ii) sin 2A + sin 2B + sin 2C = 4 sin A sin B sin C
#. - If A, B, C are the angles of a triangle; show that
i) (tan A - cot B) = cos C sec A csc B.
ii) sin 2A + sin 2B + sin 2C = 4 sin A sin B sin C
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