Q. 22

# Mark against the

Given: Equation of two planes are and

To find: Angle between the two planes

Formula Used: Angle between two planes a1x + b1y + c1z = 0 and a2x + b2y + c2z = 0 is

where θ : angle between the planes,

Explanation:

Since , the given equation of planes can rewritten as:

3x – 6y + 2z = 4 and 2x – y + 2z = 3

Here a1 = 3, b1 = -6, c1 = 2

a2 = 2, b2 = -1, c2 = 2

Therefore angle between the planes is

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