Question

Anyone now about triangles?

Answer 1

A) 20sin (15)
B) 5/tan(15)
C) cos^-1 (10/11)
D) sqrt (180) <---- (a^2 + b^2 = c^2)

I just put what you should type into the calculator. Make sure you have your calculator in the right mode (radian or degree), Idk which you needed so...