You have been learning about the coordinates of points using x and y – not (sin and cos) and angles (standard position, initial and terminal rays, co-terminal angles). Today you will learn about trigonometric ratios using the right triangle. The trigonometric, relationships pertaining to the right triangle will help prepare students to learn the trigonmetric identities.
INTRODUCTION TO TRIGOMETRIC RATIOS
PRE-REQUISITE KNOLEDGE
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