The angle between the two planes x + y - z = 3 and 3x + 2y + z = 5 is : Option 1: ^-1 4 Option 2: ^-1 2sqrt(42)21 Option 3: ^-1 1/4 Option 4: ^-1 1sqrt(42)

The answer is '^-1 2sqrt(42)21'. View full solution:

CUET Mathematics - The angle between the two planes x + y - z = 3 and 3x + 2y + z = 5 is : | PYQs + Solutions

CUET Mathematics 2023 30 May Shift 3

Geometry

Medium

$\cos^{-1} 4$

$\cos^{-1} \frac{2\sqrt{42}}{21}$

$\cos^{-1} \frac{1}{4}$

$\cos^{-1} \frac{1}{\sqrt{42}}$

✅ Correct Option: 2

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