$\"\"$ \ \

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Observe the figure :

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Length of the adjacent side is $\"\"$ .

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Length of the opposite side is $\"\"$ .

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Apply Pythagorean theorem :

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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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Find the trigonometric functions:

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

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$\"\"$ .

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$\"\"$ .

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$\"\"$ .

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$\"\"$ .

\

$\"\"$ .

\

$\"\"$ .

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$\"\"$

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