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A 18 -ft ladder leans against a building so that the angle between the ground and the ladder is 82 ^\circ.

How high does the ladder reach on the building?

  • calc -

    I don't understand your notation of 82 ^\circ
    but I will assume that the ladder makes an angle of 82° with the ground at the foot of the ladder

    sin 82° = height/18
    height = 18sin82 = appr 17.8 ft

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