Teaching Chandigarh JBT PRT Mock Test 2023-24 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
Which of the following options is NOT a correct trigonometric identity?
1
1 + cot2θ ≡ cosec2θ
2
1 + tan2θ ≡ sec2θ
3
1 - sin2θ ≡ cos2θ
4
cos2θ - sin2θ ≡ 1