5.)
a.) 1/ csc 36°
b.) csc 36°
c.) 1/ tan 36°
d.) cos 36°
e.) tan 36°

B.)

Step-by-step explanation:

Given:

We need to rewrite the given expression as single trigonometric function.

Now According to reciprocal Identities given:

Also Given;

Sow when

and when

Hence the Single trigonometric function is  .

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length