C-09-Q021mediumsingle_mcqThe mathematical form of the second law of refraction is —an1/n2=sinθ1/sinθ2n_1/n_2 = \sin\theta_1/\sin\theta_2n1/n2=sinθ1/sinθ2bn1sinθ1=n2sinθ2n_1 \sin\theta_1 = n_2 \sin\theta_2n1sinθ1=ncn1cosθ1=n2cosθ2n_1 \cos\theta_1 = n_2 \cos\theta_2n1cosθ1=ndn1tanθ1=n2tanθ2n_1 \tan\theta_1 = n_2 \tan\theta_2n1tanθ1=n