If is the focal length of the camera lens and θ is the angle of tilt – McqOptions

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1.	If is the focal length of the camera lens and θ is the angle of tilt, the distance of the plumb point from the principal point will be
A.	sin θ
B.	cos θ
C.	tan θ
D.	sec θ.
Answer» D. sec θ.

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