Trigonometric values of special angles

1 video
1 skill
Learn how to find the trigonometric values of some special angles without the use of a calculator.

Finding the trigonometric values of a special angle in the unit circle

VIDEO 7:54 minutes
Sal finds the trigonometric values of π/4.

Find the trigonometric values of special angles

PRACTICE PROBLEMS
Find the sine and cosine of special angles, which are angles that we can tell their trig values without the use of a calculator.