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If Dave is standing next to a silo of cross-sectional radius r = 9 feet at the...

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Question

Basic Math

If Dave is standing next to a silo of cross-sectional radius

r = 9

feet at the indicated position, his vision will be partiallyobstructed. Find the portion of the y-axis that Davecannot see. (Hint: Let a be the x-coordinate ofthe point where line of sight #1 is tangent to the silo; computethe slope of the line using two points (the tangent point and (12,0)). On the other hand, compute the slope of line of sight #1 bynoting it is perpendicular to a radial line through the tangencypoint. Set these two calculations of the slope equal and solve fora. Enter your answer using interval notation. Round youranswer to three decimal places.)

Answer & Explanation Solved by verified expert
3.8 Ratings (425 Votes)
SolutionLet the circle with a center O Origin having radius 9 Apoint P at 120 A line which is tangent to the circle at point    See Answer
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