Radians Flashcards
1
Q
Small angle sin
A
= θ
2
Q
Small angle tan
A
= θ
3
Q
Small angle cos
A
1- (θ^2)/2
4
Q
Radians into degrees
A
/180, xπ
5
Q
Conversion rule
A
Divide by the one you want to get out of, multiply the one you want to get into
6
Q
Area of a sector
A
1/2 r^2 θ
7
Q
Arc length
A
rθ
8
Q
Area of a segment
A
1/2 (θ - sinθ) r^2
