Using Cosine,Sine, and Tangent to find Angle Measure of a right triangle

How do you find the angle measure of a right triangle using trig functions? Follow these steps.

Step 1.From the unknown angle, decide which two sides you have. By evaluating which angles you have  you can decide which trig function to use.( Sin,Cosine,Tangent)

For example if I have opposite and hypotenuse I'm going to use the sin function. 

Step. 2.After deciding which trig function to use, set up the problem, and instead of the variable being x in the proportion the variable will be at the angle. 

Step 3. Solve using the 2nd function key.

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What is tangent?

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What is tangent?

Setting up tangent ratios

In this video you will learn …..

How to set up a tangent function.

Learn that tangent is opposite over adjacent

Watch a sample problem setting up tangent

Learn which trig function does not use hypotenuse

For more information please see What is tangent?

Leave a Comment tangent, trig functions, what is tangent