Radians Flashcards
1
Q
When θ is small sin θ =?
A
sin θ = θ
2
Q
When θ is small tan θ =?
A
tan θ = θ
3
Q
When θ is small cos θ =?
A
cos θ = 1 - (θ^2)/2
4
Q
How do you find arc length?
A
l = rθ
5
Q
Area of a sector of a circle
A
A = 1/2(r^2)θ
6
Q
Area of a segment
A
1/2(r^2)(θ-sinθ)
