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Trigonometry. QuestionA ladder leaning against a wall reaches a height of 10m up the...
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Let us say the point touching the ground in ladder is A, the point of ladder that touch the wall is B and the point of bottom of wall as C.
According to the data given;
`BC = 10m`
`angleBAC = 75 deg`
Length of ladder `= AB`
By the geometry;
`sinA = BC/AB`
`sin75 = 10/AB`
`AB = 10/sin75`
`AB = 10.353`
So the length of ladder is 10.353m.
Posted by jeew-m on November 4, 2012 at 2:26 AM (Answer #1)
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