Question

What quadrant does cos(-Theta) lie?

Answer 1

`IV^(th) Quadrant`, where,

`cos(-theta)=costheta`

`sin(-theta)=-sintheta`

`tan(-theta)=-tantheta...etc`

Explanation:

Here,

`color(red)(cos(-theta)=cos(0-theta) to IV^(th) Quadrant`

Please see the Chart carefully.