Angle Between Two Planes (cos θ = |n1·n2|/(|n1||n2|) for acute angle between planes)
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cos θ = |n1·n2|/(|n1||n2|) for acute angle between planes
What each symbol means
| Symbol | What it stands for |
|---|---|
| n1,n2 | Normals to the planes |
When to use this
Acute angle convention: use absolute value on dot product.