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9. Unit Circle
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9. Unit Circle
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9. Unit Circle / Reference Angles / Problem 8
Problem 8
List the six trigonometric function values of the following angle. Provide exact values. When necessary, rationalize the denominator.
1290°
A
sin 1290° = 1/2, cos 1290° = -(√3)/2, tan 1290° = -(√3)/3, cot 1290° = -√3, sec 1290° = -(2√3)/3, csc 1290° = 2
B
sin 1290° = -1/2, cos 1290° = -(√3)/2, tan 1290° = (√3)/3, cot 1290° = √3, sec 1290° = -(2√3)/3, csc 1290° = -2
C
sin 1290° = 1/2, cos 1290° = -(√2)/2, tan 1290° = -(√2)/2, cot 1290° = -√2, sec 1290° = -√2, csc 1290° = 2
D
sin 1290° = -1/2, cos 1290° = -(√2)/2, tan 1290° = (√2)/2, cot 1290° = √2, sec 1290° = -√2, csc 1290° = -2
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