More Lessons for Grade 9 Math
Examples. videos, worksheets, solutions, and activities to help students learn how to find the missing side of a right triangle given an angle and side using trigonometry.
Right Triangle Trigonometry
This video explores basic right triangle trigonometry used to locate a missing side in a right triangle.
Using Cosine ratio to find side length
Basic introduction to sin, cos and tan including finding the missing side when given one side and one angle and a right angle.
Try the free Mathway calculator and
problem solver below to practice various math topics. Try the given examples, or type in your own
problem and check your answer with the step-by-step explanations.
We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.