How we get the underlined step by its above step Share with your friends Share 0 Atul Shaw answered this Dear student,cos x+sin x=2×12×cos x+sin x=2cos x2+sin x2=2sin π4cos x+cos π4sin x=2 sinπ4+x=2sin x+π4sin (A+B)=sin A cos B+cos A sin BRegards 0 View Full Answer
