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Activity
Math Words

Math words.com: Trig Identities

For Students 9th - 10th Standards
This MathWords.com site lists the equations for all of the trigonometric identities.
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Handout
Math Words

Math Words: Cofunction Identities

For Students 9th - 10th Standards
This MathWords.com site, which is a glossary of math terms, shows the relationship in radians and degrees between sin and cos, tan and cot, and sec and csc.