Answer:
Step-by-step explanation:
Alright, lets get started.
We know the identity, even/odd
cos(-Θ) = cos (Θ)
Means cos(Θ)=[tex]\frac{4}{5}[/tex]
Using triangle method and SOH CAH TOA, please refer the diagram attached
sin(θ)= [tex]\frac{3}{5}[/tex]
We know, sin(-Θ)= -sin(Θ)
So, sin (-Θ) = [tex]-\frac{3}{5}[/tex]
So the answer is C : Answer
