Answer:
Explanation:
Alright, lets get started.
We know the identity, even/odd
cos(-Θ) = cos (Θ)
Means cos(Θ)=

Using triangle method and SOH CAH TOA, please refer the diagram attached
sin(θ)=

We know, sin(-Θ)= -sin(Θ)
So, sin (-Θ) =

So the answer is C : Answer