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Prove that sin2A+sin2B+sin2C-sin2(A+B+C)=4sin(B+C).sin(C+A).sin(A+B)

Prove that sin2A+sin2B+sin2C-sin2(A+B+C)=4sin(B+C).sin(C+A).sin(A+B)

Grade:11

1 Answers

Vikas Amritiya
askIITians Faculty 202 Points
2 months ago
Dear student please find attachment below 
Here is detailed solution of your doubts
keep asking ypur doubts
Askiitians faculty

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