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In ABC, if cot A+cot B+cot C = cosecA cosecB cosecC, then prove that ABC is right angle triangle.

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Find the general solution of equation tan3∂=cot2∂For all angles between -720 and +720

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To prove : Cosec(45 degree - A)Cosec(45 degree + A) = 2SecA

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cos^2 13ºcos^2 47º+cos^2 73º =? …..................

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Derive a formula for the area of the triangle, given b, A, B, and C. That is, derive the formula: (b^2sinAsinC)/(2sinB)

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