Question

Given that sinθ = 2/5 and 0 < θ < 90, what is the exact value of cscθ?

Please select the best answer from the choices provided

Answer 1

5/2

Explanation:

cscθ = 1/sinθ = 1/(2/5) = 1 x (5/2) = 5/2

Answer 2

We know,

`\boxed{sin( \theta) = (1)/(csc( \theta)) }`

So,

=》

`(2)/(5) = (1)/( \csc( \theta) )`

=》

`\csc( \theta) = (5)/(2)`