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Solve the following.
Find the angle between the two lines:
Find the angle between the two lines:
$\frac{x + 1}{2} = \frac{y - 2}{5} = \frac{z + 3}{4} \quad \text{and} \quad \frac{x - 1}{5} = \frac{y + 2}{2} = \frac{z - 1}{-5}$
Answer
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From ISC 2020 Mathematics Paper 1, question 15(b).
Check your working with the 3D geometry and vectors calculator: points, vectors, lines and planes: distances, angles, foot and image, shortest distance, intersections.