Question

LHS sio 'o +cose 1-28100 costo

SSC CGL

Maths

Solution

4.0 (1 ratings)

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}{=} )