How To Do Exact Trig Values

How To Do Exact Trig Values. You can use the pythagorean, tangent and reciprocal identities to find all six trigonometric values for certain angles. How do you find the exact value of a trig function?

Fucking Betas Memorising Exact Trig Values Gcse from i.imgur.com

I've been doing practice exams and i lose all my marks in exam 1 on the trig questions because i can't remember the exact values. How to use the unit circle to find exact values of trigonometric functions. This lesson demonstrates how to find exact values of trig functions using special right triangles and reference angles.

How do you learn the exact values of say cos(2pi/3), sin(pi/3) etc.

Except for a handful of arguments, the inverse trig functions won't have exact values. What are we to do? How do you learn the exact values of say cos(2pi/3), sin(pi/3) etc. What is missing is a way to go from the ratios back to the original angles.