Math Chapter Wise Trigonometrical Identities And Circular Function English MCQ OAVS TGT 2017 Q.Which of the following is false? Asin2 θ + cos2 θ =1 B1+ cot2 θ = cosec2 θ Csec2 θ–tan2 θ=1 Dsec2 θ + 1 = tan2 θ Show answer Correct answer: sec2 θ + 1 = tan2 θ