Teaching DSSSB TGT Mock Test 2025 Mathematics Three Dimensional Geometry Angle with Planes

The plane 2x – 3y + 6z – 11 = 0 makes an angle sin–1(α) with x-axis. The value of α is equal to

1
\(\frac{\sqrt{3}}{2}\)
2
\(\frac{\sqrt{2}}{3}\)
3
\(\frac{2}{7}\)
4
\(\frac{3}{7}\)
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