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1 May, 11:02

What angle of inclination (to the nearest whole degree) does a stairway make with the floor if the steps have a tread of 11 inches and a rise of 6 inches?

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  1. 1 May, 12:35
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    tan x = opposite / adjacent

    tan x = 6 / 11

    tan x = 6 / 11

    x = 28.61 (or 29 degrees rounding to the nearest whole degree)
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