Find the angle between the two planes `2x + y 2z = 5`and `3x 6y 2z = 7`using vector method.

Explanation

2 x+y-2 z=5
`Rightarrow 2 x+y-2 z-5=0 `

`3 x-6 y-2 z=7 `

`Rightarrow 3 x-6 y-2 z-7=0`


On Comparing the given equations 2 x+y-2 z-5=0,3 x-6 y-2 z-7=0 with
`a_{1} x+b_{1} y+c_{1} z+d_{1}=0 and a x+b_{2} y+c_{2} z+d_{2}=0`
we get,


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