Circular measure Flashcards by Ben Catchpole

Q

π rad

A

180^o

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Q

Change 45^o to radians

A

45^o = 45*π/180 rad
= π/4 rad

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Q

Change 11π/6 rad to degrees

A

11π/6 rad= 11π/6 * 180/π
= 330^o

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Q

Arc length

A

rθ

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Q

Area of sector

A

1/2 * r²θ

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