‹ Back to the paper
The angle between the two planes and is:
The angle between the two planes $x + y + 2z = 9$ and $2x - y + z = 15$ is:
- (a)$\frac{\pi}{2}$
- (b)$\frac{\pi}{3}$
- (c)$\pi$
- (d)$\frac{3\pi}{4}$
Answer
No answer yet.
From ISC 2025 Mathematics Paper 1, question 15(ii).