$\"\"$

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Let $\"\"$ be an angle in standard position with $\"\"$ a point on the terminal side of $\"\"$ and $\"\"$ .

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$\"\"$ , $\"\"$ , $\"\"$ , $\"\"$ , $\"\"$ , and $\"\"$ .

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$\"\"$

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Observe the figure :

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The point is $\"\"$ .

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Find the value of $\"\"$ .

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Apply formula : $\"\"$ .

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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 trigonometric functions $\"\"$ , $\"\"$ , and $\"\"$ .