Radians Equations Flashcards by Samuel Lea | Brainscape

Q

How many radians in a circle?

A

2π

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Q

What is the formula for a sector?

A

1/2(r^2)θ

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Q

What is the formula for a triangle?

A

1/2(r^2)sinθ

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Q

What is the formula for a segment?

A

area of sector - area of triangle

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Q

What is the formula for length of a chord?

A

2rsin(θ/2)

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Q

what is the formula for length of an arc?

A

rθ

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