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7 Prove thatsin 0 —2sin’0 न20050: |
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Answer» (sin-2sin^3 )/(2cos^3-cos)=tan solving LHS lhs=(sin-2sin^3 )/(2cos^3 -cos) lhs=sin(1-2sin^2)/cos(2cos^2-1) lhs=sincos2/coscos2 lhs=sin/cos lhs=tan lhs=rhs hence proved |
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