$\"\"$

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(a)

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Observe the unit circle :

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The angle $\"\"$ radian corresponds the point $\"\"$ .

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So, $\"\"$ ,

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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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Use the calculator to approximate each of the six trigonometric functions at $\"\"$ .

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Estimate the values to the nearest tenth :

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Function Mode Calculator keystrokes Display

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$\"\"$ Radian $\"\"$ $\"\"$

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$\"\"$ Radian $\"\"$ $\"\"$

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$\"\"$ Radian $\"\"$ $\"\"$

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$\"\"$ Radian $\"\"$ $\"\"$

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$\"\"$ Radian $\"\"$ $\"\"$

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$\"\"$ Radian $\"\"$ $\"\"$

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$\"\"$

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(b)

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Observe the unit circle :

\

The angle $\"\"$ radian corresponds the point $\"\"$ .

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So, $\"\"$ ,

\

$\"\"$ ,

\

$\"\"$ ,

\

$\"\"$ ,

\

$\"\"$ ,

\

$\"\"$ .

\

$\"\"$

\

Use the calculator to approximate each of the six trigonometric functions at $\"\"$ .

\

Estimate the values to the nearest tenth :

\

Function Mode Calculator keystrokes Display

\

$\"\"$ Radian $\"\"$ $\"\"$

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$\"\"$ Radian $\"\"$ $\"\"$

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$\"\"$ Radian $\"\"$ $\"\"$

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$\"\"$ Radian $\"\"$ $\"\"$

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$\"\"$ Radian $\"\"$ $\"\"$

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$\"\"$ Radian $\"\"$ $\"\"$

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$\"\"$

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(a)

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The approximate values of $\"\"$ , $\"\"$ , $\"\"$ , $\"\"$ , $\"\"$ , and \ \ $\"\"$ .

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(b)

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The approximate values of $\"\"$ , $\"\"$ , $\"\"$ , $\"\"$ , $\"\"$ , and \ \ $\"\"$ .