cos(pi/2 +x) =-sin x in graph
Answers
Answered by
1
Step-by-step explanation:
To prove that : cos (pi/2 + x) = -sin x
LHS = cos (pi/2 + x)
= cos 90 cos x - sin 90 sin x
= 0*cos x - 1*sin x
= - sin x, = RHS. Proved.
Similar questions