cos^(-1)(-(1)/(2))...

cos^(-1)(-(1)/(2))

cos^(-1)(-(1)/(2))
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((1 + cos A) / (sin A)) ^ (2) = (1 + cos A) / (1-cos A)
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cos(1/2cos^(- 1)1/8)=
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If quad Tan^(-1)(1)+cos^(-1)(-(1)/(2))+sin^(-1)(-(1)/(2)) and y=cos[(1...
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If x = tan^(-1) 1 - cos^(-1) ( - 1/2) + sin^(-1) 1/2 , y = cos (1/2 c...
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सिद्ध कीजिए कि : (1)/(1 - cos A) + (1)/( 1 + cos A) = 2 "cosec" ^(2) ...
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cos [cos^(-1)(-1/2)-sin^(-1)(1/2)]
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(2 cos theta - 1 ) ( 2 cos 2 theta -1)(2 cos 4 theta -1)(2 cos 8 theta...
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(1+cos A)/(sin^(2)A)=(1)/(1-cos A)
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