Answer:
Step-by-step 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
