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# Math Help: Introduction to sine, cosine and tangent

Refresh your competency in the various areas of Mathematics.

## INTRODUCTION TO SINE, COSINE AND TANGENT

In this module, you can study how to calculate for the angles of a right triangle; how to use SohCahToa to remember the formulae for calculating sine, cosine and tangent.

## Did you know?

"Adjacent" and "opposite" sides can change, depending on which angle you start from.

"Cos(x)" means "the cosine of x degrees"; it does NOT mean multiply the cosine by x.

Study and practice

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