Arcs and sectors Flashcards

1
Q

area of a sector

A

half x radius squared x theta

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2
Q

arc length

A

θ × r

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3
Q

check if you should

A

sub in

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4
Q

draw a graph

A

for curves when you get co-ords

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5
Q

Arc Length (when θ is in degrees):

A

ArcLength=
θ/360 × 2πr

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6
Q

Sector Area (when θ is in degrees):

A

SectorArea = 𝜃/360 ×𝜋 𝑟(squared)

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7
Q

Perimeter of a Sector

A

rθ+2r

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