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Unit Circle Matching
Knowing all parts of the unit circle (angles in radians and degrees) and ordered pairs
80
Mathematics
11th Grade
02/25/2011
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Cards

Term
The ordered pair at 3 Pi / 4
 Definition
(-sqrt 2 / 2, sqrt 2 / 2)
Term
The ordered pair at 5 PI / 3
 Definition
(1/2, -sqrt 3 / 2)
Term
5 Pi / 6 radians is how many degrees?
 Definition
150 degrees
Term
225 degrees is how many radians?
 Definition
5 Pi / 4
Term
The ordered pair at 270 degrees
 Definition
(0, -1)
Term
The ordered pair at Pi / 3
 Definition
(1/2, sqrt 3 / 2)
Term
90 degrees is how many radians?
 Definition
Pi / 2
Term
The ordered pair at 180 degrees
 Definition
(-1, 0)
Term
The ordered pair at 300 degrees
 Definition
(1/2, -sqrt 3 / 2)
Term
Pi radians is how many degrees?
 Definition
180 degrees
Term
The ordered pair at 7 Pi / 4
 Definition
(sqrt 2 / 2, -sqrt 2 / 2)
Term
4 Pi / 3 radians is how many degrees?
 Definition
240 degrees
Term
The ordered pair at 150 degrees
 Definition
(-sqrt 3 / 2, 1/2)
Term
45 degrees is how many radians?
 Definition
Pi / 4
Term
The ordered pair at 210 degrees
 Definition
(-sqrt 3 / 2, - 1/2)
Term
The ordered pair at 30 degrees
 Definition
(sqrt 3 /2, 1/2)
Term
The ordered pair at 45 degrees
 Definition
(sqrt 2 / 2, sqrt 2 / 2)
Term
The ordered pair (1/2, -sqrt 3 / 2) is the coordinate at what angle, in radians
 Definition
5 Pi / 3
Term
The ordered pair (0, -1) is at what angle in radians
 Definition
3 Pi / 2
Term
330 degrees is how many radians?
 Definition
11 Pi / 6
Term
The ordered pair at 4 Pi / 3 radians
 Definition
(-1/2, -sqrt 3 / 2)
Term
The ordered pair (-sqrt 2 / 2, -sqrt 2 / 2) is at what angle in radians?
 Definition
5 Pi / 4
Term
180 degrees is how many radians?
 Definition
Pi
Term
The ordered pair at Pi / 6
 Definition
(sqrt 3 / 2, 1/2)
Term
The ordered pair at 2 Pi radians
 Definition
(1, 0)
Term
The ordered pair at Pi / 4 radians
 Definition
(sqrt 2 / 2, sqrt 2 / 2)
Term
The ordered pair at 7 Pi / 6
 Definition
(-sqrt 3 / 2, -1/2)
Term
7 Pi / 6 radians is how many degrees?
 Definition
210 degrees
Term
The ordered pair (1/2, sqrt 3 / 2) is at what angle in radians?
 Definition
Pi / 3
Term
The ordered pair at 0 degrees
 Definition
(1, 0)
Term
315 degrees is how many radians?
 Definition
7 Pi / 4
Term
The ordered pair at 2 Pi / 3
 Definition
(-1/2, sqrt 3 / 2)
Term
The ordered pair at 30 degrees
 Definition
(sqrt 3 / 2, 1/2)
Term
The ordered pair at Pi
 Definition
(-1, 0)
Term
The ordered pair (sqrt 3 / 2, 1/2) is at what angle in radians?
 Definition
Pi / 6
Term
The ordered pair at 5 Pi / 4
 Definition
(-sqrt 2 / 2, -sqrt 2 / 2)
Term
The ordered pair at (-1/2, -sqrt 3 / 2) is at what angle in radians
 Definition
4 Pi / 3
Term
The ordered pair (-sqrt 2 / 2, sqrt 2 / 2) is at what angle in radians
 Definition
3 Pi / 4
Term
The ordered pair at 225 degrees
 Definition
-sqrt 2 / 2, -sqrt 2 / 2)
Term
The ordered pair (1, 0) is at what angle in radians
 Definition
0 or 2 Pi
Term
The ordered pair (-sqrt 3 / 2, -1/2) is at what angle in radians
 Definition
7 Pi / 6
Term
Pi / 6 is how many degrees?
 Definition
30 degrees
Term
60 degrees is how many radians?
 Definition
Pi / 3
Term
The ordered pair at 11 Pi / 6
 Definition
(sqrt 3 /2, - 1/2)
Term
210 degrees is how many radians?
 Definition
7 Pi / 6
Term
The ordered pair (sqrt 3 / 2, -1/2) is at what angle in radians?
 Definition
11 Pi / 6
Term
The ordered pair (-sqrt 3 /2, 1/2) is at what angle in radians?
 Definition
5 Pi / 6
Term
The ordered pair at 3 Pi / 2
 Definition
(0, -1)
Term
The ordered pair at 135 degrees
 Definition
(-sqrt 2 / 2, sqrt 2 / 2)
Term
The ordered pair (0, 1) is at what angle in radians?
 Definition
Pi / 2
Term
The ordered pair (-1, 0) is at what angle in radians?
 Definition
Pi
Term
The ordered pair at 120 degrees
 Definition
(-1/2, sqrt 3 / 2)
Term
120 degrees is how many radians?
 Definition
2 Pi / 3
Term
The ordered pair at 5 Pi / 6
 Definition
(-sqrt 3 / 2, 1/2)
Term
240 degrees is how many radians?
 Definition
4 Pi / 3
Term
The ordered pair (sqrt 2 / 2, sqrt 2 / 2) is at what angle in radians?
 Definition
Pi / 4
Term
The ordered pair at 90 degrees
 Definition
(0, 1)
Term
2 Pi / 3 is how many degrees?
 Definition
120 degrees
Term
5 Pi / 4 radians is how many degrees?
 Definition
225 degrees
Term
3 Pi / 2 radians is how many degrees?
 Definition
270 degrees
Term
The ordered pair at 315 degrees
 Definition
(sqrt 2 / 2, -sqrt 2 / 2)
Term
The orderd pair at 330 degrees
 Definition
(sqrt 3 / 2, - 1/2)
Term
The ordered pair at 60 degrees
 Definition
(1/2, sqrt 3 / 2)
Term
3 Pi / 4 radians is how many degrees?
 Definition
135 degrees
Term
The ordered pair at 240 degrees
 Definition
(-1/2, -sqrt 3 /2)
Term
The ordered pair (-1/2, sqrt 3 / 2) is at what angle in radians?
 Definition
2 Pi / 3
Term
7 Pi / 4 radians is how many degrees?
 Definition
315 degrees
Term
Pi / 3 radians is how many degrees?
 Definition
60 degrees
Term
270 degrees is how many radians?
 Definition
3 Pi / 2
Term
The ordered pair (sqrt 2 / 2, - sqrt 2 / 2) is at what angle in radians?
 Definition
7 Pi / 4
Term
Pi / 2 radians is how many degrees?
 Definition
90 degrees
Term
5 Pi / 3 radians is how many degrees?
 Definition
300 degrees
Term
135 degrees is how many radians?
 Definition
3 Pi / 4
Term
11 Pi / 6 radians is how many degrees?
 Definition
330 degrees
Term
The ordered pair at 0 radians
 Definition
(1, 0)
Term
The ordered pair at 360 degrees
 Definition
(1, 0)
Term
The ordered pair at Pi / 2
 Definition
(0, 1)
Term
The ordered pair at Pi / 4
 Definition
(sqrt 2 / 2, sqrt 2 / 2)
Term
300 degrees is how many radians?
 Definition
5 Pi / 3
Term
150 degrees is how many radians?
 Definition
5 Pi / 6
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