Question

How do you evaluate `csc 495°`?

Answer 1

`sqrt2`

Explanation:

`csc 495 = 1/(sin 495).`
Find sin (495)
sin (495) = sin (135 + 360) = sin 135
Trig Table of special arcs -->
`sin (495) = sin 135 = sqrt2/2`
There for,
`csc (495) = 1/(sin) = 2/sqrt2 = sqrt2`