Practicing Success
The angle of elevation of a ladder leaning against a house is 60° and the foot of the ladder is 6.5 m from the foot of the house. Find the length of the ladder in meters. |
11.25 meters 17 meters 15 meters 13 meters |
13 meters |
We know , tan60º = \(\frac{ √3 }{1}\) { we know, tan A = \(\frac{ P }{B}\) } P = √3, B = 1 By using pythagoras theorem , P² + B² = H² ( √3 )² + 1² = H² 3 + 1 = H² H = 2 According to question , 1R = 6.5 m So, 2R = 2 x 6.5 = 13 m Length of ladder is = 13 m |