radians area formula Flashcards by sigma 123

Q

how do you convert from degrees to radians

A

÷ 180 and then multiply by π

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Q

arc length equation

A

L=θr

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Q

sector area equation

A

(1/2) r² θ

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Q

segment area equation

A

(1/2) r² (θ − sin θ)

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Q

what are the small angle approximations

A

sin θ ≈ θ
tan θ ≈ θ
cos θ ≈ 1 − θ²⁄2

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