A taut wire supports a vertical pole. The wire is fixed to the ground 10 meters away from the base of the pole and makes an angle of 60" with the ground. What is the length of the wire?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 20 m.
AB = Pole and AC = Wire
BC/AC = cos 60° = 1/2
⇒ 10/AC = 1/2
⇒ AC = 20 m