Arcs and sectors Flashcards
1
Q
area of a sector
A
half x radius squared x theta
2
Q
arc length
A
θ × r
3
Q
check if you should
A
sub in
4
Q
draw a graph
A
for curves when you get co-ords
5
Q
Arc Length (when θ is in degrees):
A
ArcLength=
θ/360 × 2πr
6
Q
Sector Area (when θ is in degrees):
A
SectorArea = 𝜃/360 ×𝜋 𝑟(squared)
7
Q
Perimeter of a Sector
A
rθ+2r