Question

use the right triangle shown in the margin. Then using the given information, solve the triangle. b=5, B= 20 degrees ; find a, c, A

Answer 1

A is 80 because the angles have to add up to 180

Answer 2

i got that

Answer 3

then to find \(a\) you can use \(\sin(20)=\frac{5}{a}\) so
\[a=\frac{5}{\sin(20)}\]

Answer 4

then for the third side you can use trig again or since you know two sides of the right triangle you can find the third by pythagoras

Answer 5

I got stuck