Question

-(sin theta) is equivelent to :
(A) cos (π/2+theta)
(B) cos(π/2-theta)
(C) sin (theta-π)
(D) sin (π+theta)​

Answer 1

Step-by-step explanation:

option 1 because cos(90degrees+theta)=-sintheta

as cos (90+ theta) belongs to second quadrant and cos is negative in 2nd quadrant