## Using a Calculator for Trigonometric Ratios

Read this article and watch the videos to learn how to input trigonometric functions into your calculator.

Then, complete review questions 1–3 and check your work to make sure you are able to use your calculator correctly.

Click https://www.ck12.org/trigonometry/calculator-trig-functions/lesson/Trigonometric-Ratios-with-a-Calculator-GEOM/ link to open resource.