CA 2 Flashcards by Georgie Howard

Q

Arc length radians

A

r0

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Q

Segment area radians

A

r^2 0 / 2

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Q

Area of part at top in radians

A

r^2 0 / 2 - 1/2 r^2 sin0

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Q

Pi is?

A

180

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Q

Small angle approximations:

A

sinx = x
cosx = 1 - x^2/2
tanx = x

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Q

2 pi is?

A

360

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Q

Trig sin rules

A

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Q

Cos and sin values

A

cos(x-90) = sinx
sin(x+90) = cosx

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