Question

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

JEE/Engineering Exams

Maths

Solution

4.0 (1 ratings)

( 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} )