\"\"

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Distance between weight and pulley is \"\".

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Acute angle is \"\".

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Find the distance from the person\"\"s hand to the weight.

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Let distance from the person\"\"s hand to the weight \"\".

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Draw a diagram using above information.

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\"\"

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The trigonometric function : \"\".

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\"\"

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Distance from the person\"\"s hand to the weight is \"\".

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Choice (A)  \"\"  is correct.

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\"\"

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Choice (A)  \"\"  is correct.