Question

( sin frac{1}{sqrt{5}}+cos ^{-1} x=frac{pi}{4} )
( Rightarrow quad sin ^{-2} frac{1}{sqrt{5}}+frac{pi}{2}-sin ^{2} x=pi / 4 )
( =1 quad sin frac{1}{v_{5}}-mu^{-1} x+frac{pi}{4}=0 )
( Rightarrow quad ln frac{1}{sqrt[4]{5}}+sin ^{1} frac{1}{sqrt{2}}=sin ^{2} alpha )
( x=frac{3}{sqrt{16}}=x )

# Solve the following equations :

Solution