Answer :

Given: Equation of two planes are 2x – y + 2z = 3 and 6x – 2y + 3z = 5


To find: cos θ where θ: angle between the planes


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



where θ : angle between the planes,


Explanation:


Here a1 = 2, b1 = -1, c1 = 2


a2 = 6, b2 = -2, c2 = 3





Therefore,

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