Question

( sin x+sqrt{2}=cos x )
( sin x-cos x=-sqrt{2} )
( frac{1}{sqrt{2}} cos x-frac{1}{sqrt{x}} sin x=1 )
( cos frac{pi}{4} cos x-sin frac{pi}{4} sin n=1 )
( cos left[frac{pi}{4}+xright]=cos 2 pi )
( frac{pi}{4}+x=2 pi )
( x=2 pi-frac{pi}{4} )
( x=frac{7 pi}{4} )

# (0) SANNA Solve the following equations : (a) sinx + 2 = cosx.

Solution