The maximum error in radial line assumption,is

- 1
  
  $\frac{h}{H} f \tan θ$
- 2
  
  $\frac{h}{H} f^{2} \tan θ$
- 3
  
  $\frac{h}{H} f^{2} \sin θ$
- 4
  
  $\frac{h}{H} f \cos θ$

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