$\"\"$

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Observe the figure :

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

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Length of the hypotenuse is $\"\"$ . \ \

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Find hypotenuse.

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Apply pythagorean theorem: $\"open$ .

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Substitute the correponding values. \ \

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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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The trigonometric functions are

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$\"\"$ , $\"\"$ , $\"\"$

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