$\"\"$

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Observe the triangle $\"\"$ :

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

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Find the side of $\"\"$ .

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The trigonometric ratio of cosine $\"\"$ .

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$\"\"$

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$ (Substitute: $\"\"$ )

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$\"\"$ (Multiply each side by $\"\"$ )

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$\"\"$ (Cancel common terms)

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$\"\"$ (Simplify)

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Therefore, the side of the rightangle is $\"\"$ .

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Find the side of $\"\"$ .

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The trigonometric ratio of sine $\"\"$ .

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$\"\"$

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$ (Substitute: $\"\"$ )

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$\"\"$ (Multiply each side by $\"\"$ )

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$\"\"$ (Cancel common terms)

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$\"\"$ (Simplify)

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Therefore, the side of the rightangle is $\"\"$ .

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$\"\"$

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Option H is right choice.