Question

Find the value of the csc 40° using your calculator.

(A)1.342
(B)0.745
(C)1.556
(D)0.643

Answer 1

Hello!

The answer is:

C. 1.556.

`csc(40\°)}=1.556`

Why?

To solve the problem using our calculator we need to set it to "Degree" mode in order to avoid miscalculations.

Also, we need to remember that the cosecant (csc) is the inverse function of the sine, so:

`csc(40\°)=(1)/(sin(40\°)) =(1)/(0.6427)=1.556`

Hence, the answer is C. 1.556.

Have a nice day!