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OpenStudy (anonymous):
The angle of elevation of a ladder leaning against a wall is 45°. If the distance from the base of the ladder to the wall is 15 feet, find the length of the ladder
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OpenStudy (mathstudent55):
Since this is a 45-45-90 triangle, it's an isosceles triangle with both legs of equal length. b = 15 ft. Use the Pythagoras theorem to get c. |dw:1368811432442:dw|
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