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Byju's Answer
Standard XII
Mathematics
Implicit Differentiation
If A+B+C=180∘...
Question
If A + B + C =
180
∘
then sin 2A + sin 2B + sin 2C =
A
sin A sin B sin C
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B
4 sin A sin B sin C
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C
3 sin A sin B sin C
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D
2 sin A sin B sin C
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Solution
The correct option is
B
4 sin A sin B sin C
G.E = 2 sin(A+B) cos (A B) + 2 sin C cos C = 2 sin C (cos (A – B) – cos (A + B)) = 4 sin A sin B sin C.
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