radians Flashcards
1
Q
how to go from degrees to radians?
A
divide 180 x pi
2
Q
how to go from radians to degrees?
A
divide by pi x 180
3
Q
what is arc length formula radians?
A
rO (where O is feta)
4
Q
what is sector area in radians?
A
1/2r^2O
5
Q
what is segment area in radians?
A
1/2r^2 (O-sinO)
6
Q
what is the small angle approximations for sin?
A
sinO=O
7
Q
what is the small angle approximations for tan?
A
tanO=O
8
Q
what is the small angle approximations for cos?
A
1-O^2/2
