Here you will learn about finding the exact trigonometric values, including where they are located on the coordinate plane, how you can derive them, and how you can use them to problem solve.

Feb 24, 2025 · The unit circle is an excellent guide for memorizing common trigonometric values. However, there are often angles that are not typically memorized. We will thus need to use …

Dec 1, 2025 · This lesson covers how to use the trig identities to find the exact values of sine, cosine, tangent.

This video explains how to find the exact values of trig functions such as sine, cosine, and tangent using the 30-60-90 and 45-45-90 reference triangles and using SOHCAHTOA.

The by drawing a special right triangle with the help of reference angle, we can easily find the exact value of the trigonometric function. Use ASTC to fix the signs. The required angle lies in 4th …

May 12, 2025 · Learn how to find the exact value of trig functions like sin, cos, and tan using unit circle, identities, and angles—perfect for students and math learners.

Oct 11, 2025 · Calculate precise trigonometric function values. Use geometric principles and coordinate systems to derive exact answers for any angle.

Feb 1, 2024 · Quick and easy guide: How to find the exact value of a trigonometric function, offering straightforward steps for precise calculation in trigonometry.

The following diagram shows how to use the CAST rule to help us see which quadrants the trig ratios are positive. Scroll down the page for more examples and solutions.

Use our calculator for the exact value of the trig functions to find the most common values of these functions for many angles!