Radians Flashcards
(7 cards)
1
Q
Equation for Arc length
A
l= rθ
r=radius
θ= angle
2
Q
Area of a sector
A
A=(0.5)r²θ
3
Q
Area of a segment
A
A=(0.5)r²(θ-sinθ)
4
Q
What is the difference between a sector and a segment?
A
- Sector- includes curve
- Segment- only triangle
5
Q
What is the small angle approximation for sinθ
A
θ
6
Q
What is the small angle approximation for tanθ
A
θ
7
Q
What is the small angle approximation for cosθ
A
1- (θ²/2)
