If D is diagonal and F is focal length, lens angle θ is – McqOptions

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1.	If D is diagonal and F is focal length, lens angle θ is
A.	θ = tan‾¹ (D/F)
B.	θ = 2 tan‾¹ (D/F)
C.	θ = tan‾¹ (D/2F)
D.	θ = 2 tan‾¹ (D/2F)
Answer» E.

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