Mathematics · Three Dimensional Geometry
The plane ax + by = 0 is rotated through an angle α about its line of intersection with the plane z = 0. The equation of the plane in its new position is:
- 1ax + by ± z √ a 2 + b 2 cos α = 0
- 2ax + by ± z √ a 2 - b 2 cos α = 0
- 3ax + by ± z √ a 2 - b 2 tan α = 0
- 4ax + by ± z √ a 2 + b 2 tan α = 0✓
Correct answer
ax + by ± z √ a 2 + b 2 tan α = 0
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