← Algebra Course
UNIT 2 · LESSON 7

Triangle Ratio Practice

Build sine, cosine and tangent from triangle relationships.

WHY LEARN THIS?

This idea has a purpose.

Mathematics becomes much easier when you understand what a tool was designed to accomplish. This lesson will build Triangle Ratio Practice from the idea itself instead of asking you to memorize a rule first.

Places this kind of mathematics can appear:

construction
surveying
engineering
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