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A ladder leans against a wall, forming a triangle with the wall and the ground.
The angle between the ladder and the ground is 58°, and the wall is vertical (90° with the ground).
Find the angle between the ladder and the wall at the top.

Class 7Angle Sum PropertyTriangles
  • A29
  • B35
  • C64
  • D32

Step-by-Step Solution

The triangle has angles 90 deg (wall-ground), 58 deg (ladder-ground) and the unknown top angle. Top angle = 180 - (90 + 58) = 32°.
Answer: D) 32

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