A ladder 16m long leans against an electric pole. If the ladder makes an angle of 65o with the ground, how far up the electric pole does its top reach
-
A.
6.8m -
B.
14.5m -
C.
17.7m -
D.
34.3m
Correct Answer: Option B
Explanation
Sin 65o = (frac{x}{16})
x = 16x sin 65
= 16 x 0.9063
x = 14.5m