ch 1 equations Flashcards
1
Q
degrees to radians
A
multiply by pi and divide by 180
2
Q
radians to degrees
A
replace pi with 180 and simplify
3
Q
sin
A
opposite/hypotenuse
4
Q
cos
A
adjacent/hypotenuse
5
Q
tan
A
opposite/adjacent
6
Q
csc
A
hypotenuse/opposite
7
Q
sec
A
hypotenuse/adjacent
8
Q
cot
A
adjacent/opposite
9
Q
y
A
always opposite
10
Q
x
A
always adjacent
11
Q
r
A
always hypotenuse
12
Q
pythagorean identity
A
sin squared()+cos squared()=1
13
Q
arc length
A
2 pi r
14
Q
area of a sector
A
pi r squared
15
Q
linear speed
A
angular speed times radius
