Question

How do you solve cosx=2/3 ; cscx<0?

Answer 1

Solve `cos x = 2/3` with csc x < 0

Ans: - 48.19 deg

Explanation:

`cos x = 2/3 = 0.67`
Calculator gives --> `x = +- 48.19` deg
Since csc x < 0 --> sin x < 0, then, only the negative answer is accepted
`x = - 48.19` deg (Quadrant IV)