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Questions  

What is the equation of the plane which passes through the e-axis and is perpendicular to the line xacosθ=y+2sinθ=z30?

a
x+ytan⁡θ=0
b
y+xtan⁡θ=0
c
xcos⁡θ−ysin⁡θ=0
d
xsin⁡θ−ycos⁡θ=0

detailed solution

Correct option is A

The plane is perpendicular to the line x−acos⁡θ=y+2sin⁡θ=z−30Hence , the direction ratios of the normal of the plane are cos⁡θ,sin⁡θ and 0.Now, the required plane passes through the e-axis. Hence, the point (0, 0, 0) lies on the plane.Thus, we get equation of the plane as cos⁡θ(x−0)+sin⁡θ(y−0)+0(z−0)=0cos⁡θx+sin⁡θy=0x+ytan⁡θ=0

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