I just did Kaplan
's free online test (I only got a 650
how does this relate to the real GMAT as I heard Kaplan
is sometimes harder?) and one of the questions I got wrong was related to right angle triangles.
I knew that a 45-45-90 triangle has sides of length x-x-sqrt(2)x, but what I didn't know was the ratio of the sides of a 30-60-90 triangle. What other right angle triangle ratios must I know for the GMAT?