# Trig Functions

Taught by MrRutter
• Currently 3.0/5 Stars.
8615 views | 1 rating
Meets NCTM Standards:
Lesson Summary:

In this lesson, you will learn about the trig functions sine, cosine, and tangent and their relationships with angle sizes and proportion in sides of a right triangle. These trigonometric values will be shown as ratios, which are primarily fractions. The lesson provides short, general examples, with the intention of a more detailed review in a subsequent lesson. You will also be introduced to the calculator and the importance of being in the correct mode when working with trig functions.

Lesson Description:

Learn about sin, cos, and tan ratios in Geometry.

• What are trig functions?
• What are the ratios sin, cos, and tan?
• What does sohcahtoa mean and stand for?
• What does sinA mean in a triangle??
• How do you write a ratio using sin, cos, and tan?
• How do you find the sin of a degree measure?
• How do you find the angle measure if you know that sin B = a number?
• What is sin 92.4 degrees?
• What is B if sin B = 0.7823?
• #### Staff Review

• Currently 3.0/5 Stars.
This video explains the basic concept of trig functions sin, cos, and tan and how to write ratios using these functions and triangle side lengths. It also explains how to find the trig values using a calculator and how to find the angle measures if you know a trig value. This is a good basic intro to trig.