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if A,B,C be the angles of a triangle and cos theta(sinB+sinC)=sinA, then prove that tan^2(theta/2)=tan(B/2)tan(C/2)

if A,B,C be the angles of a triangle and cos theta(sinB+sinC)=sinA, then prove that tan^2(theta/2)=tan(B/2)tan(C/2)

Grade:11

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
4 years ago
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