Question

evaluate the trigonometric functions by memory or by constructing appropriate triangles for the given special angles.

a) csc 30 degrees
b) sin pi/4 = sqrt2 / 2

I just do not know how to find csc 30 degrees.

Answer 1

You should know that cscx = 1/sinx

so

csc 30
= 1/sin 30
= 1/(1/2) = 2