SOLUTION: A tower is 275 feet high. From it's top, the angle of depression to a rock on the ground is 25degrees. Find the distance from the base of the building of the the tower to the ro

Question 36505: A tower is 275 feet high. From it's top, the angle of depression to a rock on the ground is 25degrees. Find the distance from the base of the building of the the tower to the rock.
Answer by venugopalramana(3286) (Show Source): You can put this solution on YOUR website!
A tower is 275 feet high. From it's top, the angle of depression to a rock on the ground is 25degrees. Find the distance from the base of the building of the the tower to the rock.
LET BT BE THE TOWER WITH B ON THE GROUND AND T THE TOP.
BT=275
LET THE ROCK ON GROUND BE AT R.
TRIANGLE BTR IS RIGHT ANGLED AT B.
ANGLE TBR=90
ANGLE BRT=25
TAN(25) =BT/BR=275/BR
BR =275/TAN(25)=590
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