Given that A, B and C are angle of a triangle prove that:
sin B + sin C = 2cos A/2 cos B-C/2...
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Mathematics, 26.03.2021 02:40 valles36
Given that A, B and C are angle of a triangle prove that:
sin B + sin C = 2cos A/2 cos B-C/2
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Answers: 2
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