SOLUTION: the feet of two vertical poles of height 3m and 7m are in line with a point p on the ground , the smaller pole beign between the taller pole and p and a distance of 20m from p. th

Algebra ->  Trigonometry-basics -> SOLUTION: the feet of two vertical poles of height 3m and 7m are in line with a point p on the ground , the smaller pole beign between the taller pole and p and a distance of 20m from p. th      Log On


   

Question 1135332: the feet of two vertical poles of height 3m and 7m are in line with a point p on the ground , the smaller pole beign between the taller pole and p and a distance of 20m from p. the angle of elevation of the top T of the taller pole from the top R of the smaller pole is 30° find the distance RT .distance of the foot of tye taller pole from p and the angle of elevation of T from P
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
By drawing the described figure, a right triangle is found with a hypotenuse RT, having a length 7-3=4 meters opposite the 30 degree angle. This is a special 30-60-90 triangle, being HALF of an equilateral triangle; and RT is therefore 4%2A2=highlight%288%29 meters.

Some of the description seems a little unclear; but there is also another right triangle involving P and R, of legs 20 m and 3 m.