Mathematics, 01.09.2019 20:30 jhunruh6247

If a+b+c =180,
sin a+sinb+sinc=4cosa/2 cosb/2 cosc/2 prove that

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If a+b+c =180,
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If a+b+c =180,sin a+sinb+sinc=4cosa/2 cosb/2 cosc/2 prove that

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Another question on Mathematics

If a+b+c =180,
sin a+sinb+sinc=4cosa/2 cosb/2 cosc/2 prove that