radians Flashcards by Eva Kelly

Q

formula to convert degrees to radian

A

x* pi/180

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Q

formula to convert radian to degrees

A

(x*180)/pi

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Q

period of sine curve in radian

A

2pi

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Q

formula for length of an arc

A

l=xr (where x is the size of the angle in radian)

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Q

formula for area of a sector

A

A=1/2(r^2x)

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