Mathematics · Three Dimensional Geometry

The angle between the planes 2x + y + z = 7 and x - y + 2z = 9 is:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

160°
2120°
390°✓
430°

Correct answer

90°

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The angle between the planes 2x + y + z = 7 and x - y + 2z = 9 is:

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The angle between the planes 2x + y + z = 7 and x - y + 2z = 9 is:

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