LHS sio 'o +cose 1-28100 costo
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LHS sio 'o +cose 1-28100 costo

SSC CGL
Maths
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L. ( H f=frac{sin ^{4} theta+cos ^{4} theta}{1-2 sin ^{2} theta cos ^{2} theta} ) ( =frac{left(sin ^{2} thetaright)^{2}+left(cos ^{2} thetaright)^{2}}{1-2 sin ^{2} theta cos ^{2} theta} ) ( begin{aligned} a^{2}+b^{2}=(a+b)^{2}-2 a b &=0 =& frac{left(sin ^{2} theta+cos ^{2} 8right)^{2}-2 sin ^{2} theta cos ^{2} theta}{1-2 sin ^{2} theta cos ^{2} theta} end{aligned} ) ( =frac{1-2 sin ^{2} theta cos ^{2} theta}{1-2 sin ^{2} theta cos ^{2} theta}=frac{1}{=} )
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