$\"\"$

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The values are $\"\"$ , $\"\"$ , $\"\"$ .

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The sum of angles of in the triangle is $\"\"$ .

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Substitute $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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Find the values of $\"\"$ and $\"\"$ .

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From the right triangle : $\"\"$ . \ \

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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Therefore, the exact values are $\"\"$ , $\"\"$ and $\"\"$ .

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$\"\"$

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