# Answer to Question #12210 in Trigonometry for Sweety pendleton

Question #12210

from the top of a building the angles of depression of the top of the base of a lamppost, located a distanse away were measured and found to be 58 degrees and 75 degrees,respectively if the building is 90 feet high.Find the height of the lamp post

Expert's answer

Distanse to lamp post is w=90/tan75

Also tan58=(90-h)/w, where h is height

So h=90(1-tan58/tan75)=-51.407

Also tan58=(90-h)/w, where h is height

So h=90(1-tan58/tan75)=-51.407

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