Radians Flashcards
1
Q
How to change from radians to degrees?
A
Radians —- Divide by π——- x180 ——- degrees
2
Q
Arc length equation in degrees
A
θ/360 x πd
3
Q
Arc length equation in radians
A
rθ
4
Q
Area of sector equation in degrees
A
θ/360 x πr^2
5
Q
Area of sector equation in radians
A
0.5r^2θ
6
Q
Area of minor segment equation in degrees
A
θ/360 x πr^2 - 0.5r^2 sinθ
7
Q
Area of minor segment in radians equation
A
0.5r^2 (θ-sinθ)
8
Q
Small angle approximations- sinθ
A
θ
9
Q
Small angle approximations- cosθ
A
1- θ^2 /2
10
Q
Small angle approximations- tanθ
A
θ
