Determine the measure of angle C using a trigonometric ratio.

34.836

Step-by-step explanation:

sin(C)=opp/hyp=16/28=4/7

C= inverse sin = 34.836 deg

3.75%

Step-by-step explanation:

Given:

Principle amount of loan = $20,000

Interest paid = $3,000

Time of loan = 4 years

Therefore, the annual interest =

or

the annual interest = = $750

Now,

The annual interest rate = tex]\frac{\textup{Interest amount per year}}{\textup{Priciple amount}}\times100[/tex]

or

The annual interest rate = tex]\frac{\textup{750}}{\textup{20,000}}\times100[/tex]

or

The annual interest rate = 3.75%