Math Chapter Wise Vector, Gradient And Curl English MCQ UP PGT-2016 (02-02-2019) Q.Which one of the following is not correct for a common catenary Ax /c y s ce + = B2 ds csec d = ψ ψ Cy/c sec tan e ψ + ψ = Dx s csinh c = Show answer Correct answer: y/c sec tan e ψ + ψ =