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The angle between the line x+23=y−32=z+56\frac{x+2}{3} = \frac{y-3}{2} = \frac{z+5}{6} and the plane 2x+10y−11z=52x + 10y - 11z = 5 is:

Solution

✅ Correct Option: 2

Line direction b⃗=(3,2,6)\vec{b} = (3,2,6), plane normal n⃗=(2,10,−11)\vec{n} = (2,10,-11).

sin⁡θ=∣b⃗⋅n⃗∣∣b⃗∣∣n⃗∣=∣6+20−66∣49⋅225=407⋅15=821\sin\theta = \frac{|\vec{b} \cdot \vec{n}|}{|\vec{b}||\vec{n}|} = \frac{|6+20-66|}{\sqrt{49} \cdot \sqrt{225}} = \frac{40}{7 \cdot 15} = \frac{8}{21}.

So θ=sin⁡−1(821)\theta = \sin^{-1}\left(\frac{8}{21}\right).

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