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OpenStudy (anonymous):
A fire on A 150ft. Tall tower Spots A Fire At a 30degree angle of depression. About how many feet away from this tower was the fire. ( i have 4 multiple choice answers : 86.6ft. , 129.9ft , 259.8ft. & 300ft.)
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OpenStudy (dumbcow):
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OpenStudy (nurali):
Diagram as a right triangle height = 150ft, d the other leg and a 30 degree angle opposite d. tan30 = d/150 150(0.577) = d d = 86.6 feet
OpenStudy (dumbcow):
No opp angle is 60 tan(60) = d/150 d = 150sqrt(3)
OpenStudy (anonymous):
thank you @Nurali
OpenStudy (nurali):
Anytime.
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