# Math>> Help!!

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A 20 foot ladder is leaning against a building.If the ratio of the base of the ladder's distance from the building to its top's height from the ground is 3:4, find how high the top of the ladder is from the ground.

• Math>> Help!! -

Tan A = Y/X = 4/3 = 1.3333.
A = 53.13o.

h = 20*sin53.13 = 16 Ft.

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