Question

Find the general solution for each of the following equations :
(i) `cos4x=cos2x`
(ii) `cos3x=sin2x`
(iii) `sin3x+cos2x=0`
(iv) `sinmx+sinnx=0`
A. `(kpi)/(m+n), ((2k-1)/(m-n))pi, kinZ`
B. `(kpi)/(m-n), ((2k-1)/(m+n))pi, kinZ`
C. `(2kpi)/(m+n), ((2k-1)/(m-n))pi, kinZ`
D. `(2kpi)/(m-n), ((2k-1)/(m+n))pi, kinZ`

Answer 1

Correct Answer - C