Trig Vocab

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Trig Vocab

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Trig Vocab

Post Number: #1 by Jessica » January 25th, 2011, 10:49 pm

Terminal Side of an Angle

The ray where measurement of an angle stops.

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Coterminal Angles

Angles which, drawn in standard position, share a terminal side. For example, 60°, -300°, and 780° are all coterminal.

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Pythagorean Identities
Circle Identities

Trig identities relating sine with cosine, tangent with secant, and cotangent with cosecant. Derived from the Pythagorean theorem.

sin[super]2[/super] θ + cos[super]2[/super] θ = 1

tan[super]2[/super] θ + 1 = sec[super]2[/super] θ

cot[super]2[/super] θ + 1 = csc[super]2[/super] θ