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Evaluate 1
(need unit circle)
Evaluate 2
(need paper)
More evaluation
What angle(s) have
(on the unit circle)
Explain some trigonometry
100
sin(60 degrees)
What is sqrt(3) / 2
100
sec(45 degrees)
What is sqrt(2)
100
sec(5pi / 4)
What is -sqrt(2)
100
These angles (in degrees) have a cosine of 1/2.
What are 60 and 300 degrees.
100

The tangent of an angle represents this.

What is opposite side over adjacent side

200
cos(2pi / 3)
What is -1/2
200
csc(5pi / 6)
What is 2
200
45 degrees and 135 degrees have the same value for these TWO trig functions.
What are sine and cosecant.
200
These angles (in radians) have a sine of -sqrt(3) / 2.
What are 4pi / 3 and 5pi / 3.
200

These two trigonometric functions are defined for all angles. (They are never undefined, they have no asymptotes on their graphs)

What are sine and cosine.

300
tan(11pi / 6)
What is -sqrt(3) / 3
300
cot(315 degrees)
What is -1
300
cot(-3pi / 2)
What is 0
300
These angles (in degrees) have an undefined tangent.
What is 90 and 270.
300
These two trigonometric functions are positive in Quadrant I and Quadrant III.
What are tangent and cotangent.
400
sin(-135 degrees)
What is -sqrt(2)/2
400
sec(-240 degrees)
What is -2
400
2pi / 3 and 5pi / 3 have the same value for these TWO trig functions.
What are tangent and cotangent.
400
These angles (in radians) have a cosine of -sqrt(2) / 2.
What is 3pi / 4 and 5pi / 4.
400
These two trigonometric functions are not defined for 0 degrees and 180 degrees.
What are cotangent and cosecant.
500
tan(630 degrees)
What is undefined.
500
cot(19pi / 6)
What is sqrt(3)
500
csc(480 degrees)
What is 2 sqrt(3) / 3
500
These angles (in degrees) have a cotangent of sqrt(3)/3.
What is 60 and 240.
500

To convert any angle from degrees to radians, you can multiply by ______ and divide by _____.

What is  pi and 180