Question

1) sinx + 2cosx =1
2)

Answer 1

sin x+2 cos x =1
sin x +cos x= 1- cos x
sin ^2 x +cos^x+2
sin x cos x=1+cos^2 x-2 cos x
2 cos x(sin x +1)=cos^2 x
2 sin x +2= cos x
2 sin x-cos x =-2