$\"\"$

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(a)

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Maple St is at left side of Elwood Ave.

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The length of Maple street is $\"\"$ mi.

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Oak St is at right side of Elwood Ave.

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Consider the length of Elwood Ave. as $\"\"$ mi.

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Oak St. intersects Elwood Ave. at a $\"\"$ angle.

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Draw a diagram using above information.

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$\"\"$

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$\"\"$

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(b)

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Find the length of Elwood Ave.

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Acute angle $\"\"$ .

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Opposite side to acute angle $\"\"$ is $\"\"$ mi.

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Adjacent side to acute angle $\"\"$ is $\"\"$ mi.

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The trigonometric function : $\"\"$ .

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$\"\"$

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$\"\"$ mi.

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The length of Elwood Ave. as $\"\"$ mi.

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$\"\"$

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The length of Elwood Ave. as $\"\"$ mi.