Question

Find the value of the csc 40° using your calculator.
1.342 0.745 1.556 0.643

Answer 1

C: 1.556

Explanation:

I did the math on my calculator and I also got it right on my test : )

Answer 2

`\csc45^\circ=\sqrt2\approx1.414`, and
`\csc x` is an decreasing function for
`0^\circ<x<90^\circ`, so
`\csc40^\circ>\csc45^\circ`. This means 1.556 is the best (and correct) choice.