Question

Can anyone help me with this? My work is on the right, but the answer is wrong. I am told to round to the nearest whole number.

Answer 1

The answer is below

Explanation:

If you want to find the hypotenuse, your equation is right, but the next step is wrong

sin 39 = 20/c

c = 20/sin39 = 20 / 0.63 = 31.74

If you need to find b you need to use the pythagorean theorem

c2 = a2 + b2

b2 = c2 - a2

b2 = 31.74 ² - 20² = 1007.4 - 400

b2 = 607.4

b = 24.64