\"\"

\

The function is \"\", Quadrant II.

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\"\"                       (Definition of cosine)

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\"\"

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Here x is negative in Quadrant ll and r is always positive,\"\".\"\"

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Using the Pythagorean theorem, To find the y.

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\"\"

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\"\"       (Substitute \"\")

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\"\"  \ \ Subtract 1 from each side.

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\"\"

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Take square root each side.

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\"\"

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\"\"

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Find the six trigonometric functions.

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Substitute these values \"\".

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\"\"

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\"\"

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\"\"

\

\"\"

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\"\"

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\"\"

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\"\"

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\"\"

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\"\"

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\"\"

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\"\"

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\"\".\"\"

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The angles are \"\",\"\",\"\",\"\",\"\", \"\".