A ladder makes an angle of 45 degree with the ground when placed against a wall. If the foot of the ladder is 5m away from the wall, then the height of wall is?
- 5m
- 10m
- 15m
- None of these
Explanation
Ladder + wall + ground make a right triangle.
Angle = 45° at ground, distance from wall = 5m = adjacent side
tan45° = opposite / adjacent = height / 5
tan45° = 1, so height = 5 × 1 = 5m
Last verified on 24-06-2026
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