Coterminal Angles
Reference Angles
Unit Circle
Trig. Functions On the Unit Circle (no calculators)
Degrees and Radians
10

This angle has a positive coterminal angle at 390 degrees and negative coterminal angle at -330 degrees.

30 degrees

10
My initial angle is in standard position, while my terminal side lies on 330 degrees.
What is 30 degrees?
10

The amount of degrees and radians in one rotation of the unit circle.

360 degrees and 2pi radians?

10

The sin(90).

1

10

30 degrees to radians

pi/6 radians?

20

This angle has a positive coterminal angle at 210 degrees and a negative coterminal angle at -870 degrees.

 -150 degrees?

20

My initial side is in standard position, while my terminal side is at -5pi/4.

 pi/4?

20

The way we are able to create the first quadrant of the unit circle.

 30-60-90 triangles and the 45-45-90 triangle?

20

The cos(210)

-sqrt(3)/2

20

11pi/6 radians to degrees

330 degrees

30

The positive coterminal angle for this angle is 11pi/4

3pi/4

30

the reference angle for 1000 degrees where the initial side is in standard position.

80 degrees

30
The trigonometric functions that correspond to the (x, y) of an ordered pair.
What are cos-x and sin-y
30

The tan(45).

1

30

128 degrees to radians

32pi/45

40

The negative coterminal angle for this angle is -32pi/6

 -4pi/3

40

the reference angle for 40pi/3 radians.

pi/3 radians = 60 degrees

40

Regardless of positive or negative, the three different numbers we will find in quadrants 1,2,3 and 4 for values of x or y.

sqrt(3)/2, sqrt(2)/2, 1/2

40

The sin (45)

SQRT 2 / 2

40

1 degree to radians in decimal form.

 0.01745329252 radians

50

This angle has a positive coterminal angle of 13pi/6 and a negative coterminal angle of -390 degrees. (give in both radians and degrees.)

 pi/6 or 30 degrees?

50

The reference angle for -8103 degrees

3 degrees?

50

The value for tan(30) tan(45) and tan(60)

 sqrt(3)/3, 1, and sqrt(3)

50

the sec(30)

 2sqrt(3)/3

50

32pi/4 radians to degrees

1440 degrees?