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(a)

Michaels seat at a game is $\"\"$ feet.

Line of vision is $\"\"$ feet above the field.

Draw a diagram to represent the situation.

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(b)

Trigonometric function : $\"\"$ .

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Defnition of inverse tangent : $\"\"$ if and only if $\"\"$ .

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The angle of depression to home plate is $\"\"$ .

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The angle of depression to home plate is $\"\"$ .