sec−1[sec(−30∘)]= [MP PET 1992]
30∘
150∘
sec−1[sec(−30∘)]=sec−1(sec 30∘)=30∘
\(sec^{-1}[sec(-30^\circ)]=\) [MP PET 1992]
When a semiconductor is heated, its resistance
[KCET 1992; MP PMT 1994; MP PET 1992, 2002;RPMT 2001; DCE 2001]
Sky looks blue due to [MNR 1986; MP PET 1992]