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30/45/60/90?
coterminal angles
arc length
trig functions
Challenge
100
What is 5 TT/ 6?
"30"
100
Name one positive and one negative angle that are coterminal with 120 degrees.
480 degrees, -240 degrees
100
What is the arc length of a circle with a central angle of 2 TT/3 and a radius of 6?
4 TT
100
what is the sin of 225 degrees?
- (square root of 2)/2
100
What is the hypotenuse for all triangles in the unit circle?
1
200
What is 4 TT/3?
"60"
200
Name one positive and one negative angle that are coterminal with 180 degrees.
540 degrees and - 180 degrees
200
What is the arc length of a circle with a central angle of 3 TT/4 and a radius of 10?
15 TT / 2
200
what is the cos of -5 TT/ 6?
- (square root of 3)/2
200
How many "30" degree triangles are in the unit circle?
4
300
What is 2 TT?
"90"
300
Name one positive and one negative angle that are coterminal with 135 degrees.
495 degrees and - 225 degrees
300
What is the arc length of a circle with a central angle of 11 TT/6 and a radius of 60?
110 TT
300
that is the cot of 45 degrees?
1
300
Name all of the "60" triangles in the unit circle.
60, 120, 240, 300 degrees
400
What is -7 TT/4?
"45"
400
Name one positive and one negative angle that are coterminal with -300 degrees.
60 degrees and -660 degrees
400
What is the arc length of a circle with a central angle of 150 degrees and a radius of 2?
5 TT/3
400
what is the sec of 3 TT /4?
- (square root of 2)
400
Which "kind" of angles make tangents of 1 and -1?
"45"s
500
What is 7 TT/6?
"30"
500
Name one positive and one negative angle that are coterminal with - 315 degrees.
45 degrees and -675 degrees
500
What is the RADIUS of a circle with a central angle of 300 degrees an arc length of 600?
360/ TT
500
What is the csc of 10 TT/3?
- 2(square root of 3) / 3
500
At what angles is the cotangent undefined?
0 and 180 degrees