Question

(m+2) sin theta +(2m-1) cos theta= 2m+1, if

Answer 1

from trigonometric table sin0=0 and cos0=1

Given:(m+2)sin theta+(2m+1)cos theta=2m+1

(m+2)sin0+(2m+1)cos 0=2m+1

0+(2m+1)= (2m+1)