Precalc Ch 7. Important Formulas

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Precalculus Ch 7. Unit Circle & Other Important Formulas

5 Terms

1

Arc Length Formula

s = rθ (in radians)

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2

Figuring out points on a circle (x,y)

( r cos θ, r sin θ )

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3

cos, sin & 1

cos2 t + sin2 t = 1

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4

sec and tan conversion

1 + tan2 t = sec2 t

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5

cot and csc conversion

1 + cot2 t = csc2 t

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