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If A+B+C=180 then Sin 2A+Sin 2B+Sin 2C=
k Cos A Cos B Cos C. Then the value of ‘k’ is

JAGADEESH , 11 Years ago
Grade 12
anser 1 Answers
Kaustubh Nayyar
There is an identity Sin 2A+Sin 2B+Sin 2C = 4 sinAsinBsinC
but i haven’t read about Sin 2A+Sin 2B+Sin 2C=k Cos A Cos B Cos C
Last Activity: 11 Years ago
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