JEE Main 2019 Mathematics question

Mathematics Quadratic Equations and Inequalities JEE Main 2019

All x satisfying the inequality , lie in the interval:

(A)(cot 2, ∞)Correct
(B)(−∞, cot 5) ∪ (cot 2, ∞)
(C)(cot 5, cot 4)
(D)(−∞, cot 5) ∪ (cot 4, cot 2)

Answer: (A)

Solution

(the root 5 exceeds π) ⇒ x > cot 2.

Question ID VK-010462