Test 1 Flashcards
Coterminal
Two angles that have the same initial and terminal sides
The sum of two ___ angles is 90 degrees or pie/2 rad.
Complementary
The sum of two ___ angles is 180 degrees or pie rad.
Supplementary
An angle with its initial side coinciding with the positive x-axis and the origin as its vertex is said to be in ___.
Standard position
Radian is the
Measure of an angle
180 degrees = how many radians
Pie radians
Converting from radians to degrees
180/pie = 1 rad
Converting from degrees to radians
Pie/180 = 1 degree
Find Coterminal angles
Add and subtract 360 degrees
Cos
x/r
Sec
r/x
Sin
y/r
Csc
r/y
Tan
y/x
Cot
x/y
Each real number t corresponds to a point (x,y) on the ___.
Unit circle
Which trig functions are even?
Cos, sec
Which trig functions are undefined when x=0?
Sec, tan
The unit circle can be divided into ___ equal arcs using t-values that are multiples of pie/4.
Eight
0 degrees
0
1,0
30 degrees
Pie/6
root3/2, 1/2
45 degrees
Pie/4
Root2/2, root2/2
60 degrees
Pie/3
1/2, root3/2
90 degrees
Pie/2
0,1
