Question

What is the radian measure of 30-60-90

Answer 1

Hmmm check your Unit Circle, if you don't have one, this is a good time to get one, there are many online, just do a quick search for "Unit Circle".

$\bf \cfrac{\pi }{6}-\cfrac{\pi }{3}-\cfrac{\pi }{2}$

Answer 2

Degrees Radians (exact) Radians (approx.)

30° π/6 0.524

60° π/3 1.047

90° π/2 1.571