If 180º\ \textless \ a\ \textless \ 270º and cos a= -8/17 what is sin(−α)? Enter your answer as a fraction in simplest form, like this: 3/14

Question

`If 180º\ \textless \ a\ \textless \ 270º` and
`cos a= -8/17` what is sin(−α)?

Enter your answer as a fraction in simplest form, like this: 3/14

Answer 1

`(15)/(17)`

Explanation:

Look at the photo below for the details.

:)