Question

If 180°<θ<270°, and sin⁡θ=−3/4, what is the value of sin(−θ)?

Answer 1

`sin(-\theta)=(3)/(4)`

Explanation:

Given:

180°<θ<270° and
`sin(\theta)=-(3)/(4)`

We know for any angle
`\theta`,

`sin(-\theta)=-sin(\theta)`

∴
`sin(-\theta)=-(-(3)/(4))=(3)/(4)`