1) Find two unit circle angles that add or subtract to degrees shown. Unit Circle degrees 30°, 60°, 90°, 120°, 150, 45°, 90°, 135°, 180°, 225, 60°, 120°, 180°, 240°, 300, a) Cos ( 195 ) = Cos ( Not on unit circle On unit circle b) Cos ( 75 ) = Cos ( Not on unit circle On unit circle

Q: 10. Sec -405 degrees 12. Cot -90 degrees 14. cos 360 degrees  16. sin -225 degrees

A: 10)

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A: Explanation of the answer is as follows

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A: topic - trigonometric ratios

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A:

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A: To find other trignometric values.

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A:

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A:

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A: 29π10=(20+9)π10

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