Relation between the polarising angle and the speed of light in the medium

1. A.
   $V = Ccos\left( i_{p} \right)$
2. B.
   $\ Vcos\left( i_{p} \right) = Csin\left( i_{p} \right)$
3. C.
   $C = Vcot\left( i_{p} \right)$
4. D.
   $Vsin\left( i_{p} \right) = Ccos\left( i_{p} \right)$

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1. A.
   $\ \theta = \sin^{- 1}\left( \frac{v}{c} \right)$
2. B.
   $\ \theta = \tan^{- 1}\left( \frac{v}{c} \right)$
3. C.
   $\ \theta = \cot^{- 1}\left( \frac{v}{c} \right)$
4. D.
   $\ \theta = \cos^{- 1}\left( \frac{v}{c} \right)$

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