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prove that prove that sin2A+sin2B+sin2c=2(sinA+sinB+sinC)(1+cosA+cosB+cosC) if A+B+C=0

prove that prove that sin2A+sin2B+sin2c=2(sinA+sinB+sinC)(1+cosA+cosB+cosC) if A+B+C=0

Grade:9

1 Answers

Harshit Singh
askIITians Faculty 5963 Points
3 years ago
Dear Student

Here is the link to your query:

https://www.askiitians.com/forums/Trigonometry/prove-that-sin2a-sin2b-sin2c-2-sina-sinb-sinc-1-c_278410.htm


Thanks

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