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FIND AN UNKNOWN ANGLE MEASURE
In this module, you can study how to use trig ratios (sine, cosine and tangent) to find an unknown side length or unknown angle measure in a right triangle.
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Study finding an angle measure using trig
This page from mathsisfun.com explains how to find the measure of an unknown angle using trig ratios (sine, cosine and tangent). The explanation is followed by worked examples and a set of practice questions.
The sine, cosine and tangent ratios we're studying here ONLY work with right triangles.
Study and practice
Use these search terms to find your own resources:
solving right triangles with trigonometry
solving right triangles with sines, cosines and tangents