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Angle between two planes 2x + 3y + 4z = 9 and x − 2y + z = 5 is

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Angle between two planes 2x + 3y + 4z = 9 and x − 2y + z = 5 is

(A) \(\frac \pi 2\)

(B) \(\frac \pi 4\)

(C) \(\frac \pi 6\)

(D) \(\sin^{-1} \frac{3\sqrt3}5\)

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1 Answer

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by (35.1k points)

Correct option is (A) \(\frac \pi 2\)

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