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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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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More questions: Mathematics Another questions

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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Another question on Mathematics

Given that A, B and C are angle of a triangle prove that:
sin B + sin C = 2cos A/2 cos B-C/2