The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 6.5m away from the wall. The length of the ladder is.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 13 m
| Understanding | Application |
| Tricks |  |
| Now |
Here AC is the ladder BC = 6.5 So Cos60° = BC/AC ⇒ 1/2 = 6.5/AC |
| Hence | ⇒ AC = 13 |