Trigonometric Four-Choice Ques

Aren't you good at trigonometry? This application is for you. Let's solve four-choice trigonometric questions, and get used to it.

ex)

Question: cos(π/2) = ?

0, 1, -1, √2/2

Answer: 0

There are 49 Questions shuffled and asked between 0 to 2π, and sin, cos, tan.