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If ("tan"(theta+alpha))/a=""("tan"(theta...

If `("tan"(theta+alpha))/a=""("tan"(theta+beta))/b=""("tan"(theta+gamma))/c` then prove `(a+b)/(a-b)sin^2(alpha-beta)+(b+c)/(b-c)sin^2(beta-gamma)+(c+a)/(c-a)sin^2(gamma-alpha)=0`

A

1

B

-1

C

0

D

None of these

Text Solution

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The correct Answer is:
C
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