Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas JEE Main2020MathematicsTrigonometric EquationsPractice

The value of x satisfying the equation sin ⁡ x cos ⁡ x + 2 + tan 2 ⁡ x + cot 2 ⁡ x = 3

Options

  1. Abelongs to 0 , π 3
  2. Bbelongs to π 3 , π 2
  3. Cbelongs to 3 π 4 , π
  4. Ddoes not exist

Correct answer

D. does not exist

Step-by-step solution

sin ⁡ x cos ⁡ x + 2 + tan 2 ⁡ x + cot 2 ⁡ x = 3 ⇒ sin ⁡ x cos ⁡ x + tan ⁡ x + cot ⁡ x 2 = 3 ⇒ sin ⁡ x cos ⁡ x + tan ⁡ x + cot ⁡ x = 3 ⇒ 1 2 sin ⁡ 2 x + tan ⁡ x + cot ⁡ x = 3 ⇒ tan ⁡ x 1 + tan 2 ⁡ x + 1 + tan 2 ⁡ x tan ⁡ x = 3 Let t = tan ⁡ x 1 + tan 2 ⁡ x t + 1 t = 3 ⇒ t 2 - 3 t + 1 = 0 ⇒ D < 0 So, no real values of t Hence, x does not exists.

Practice Trigonometric Equations on Quantrex Academy →

More from Trigonometric Equations

Match each entry in List-I to the correct entry in List-II and choose the correct option. List-I List-II (P) The number of elements in the set x [- , ] : ^6 x + ^4 x = 1 (1) is 1 ( 2026Passage: Consider the curve C₁ given by y = e^ -x for x [0, 10 ] , and the curve C₂ given by y = e^ -x ( x + x) for x [0, 10 ] . Let n be the total number of points of intersection 2026Let S = (-2 , 2 ) : + 1 = 3 . Then _ S is equal to: 2026If S = [- , ] : 5 2 = 7 7 2 , then n(S) is equal to _______. 2026Let S = x [- , ] : x ( x + x) = a, a Z . Then n(S) is equal to : 2026The number of elements in the set x [0,180^ ]: (x+100^ )= (x+50^ ) x (x-50^ ) is _ _ _ _ . 2026Number of solutions of 3 2 +8 +3 3 =0, [-3 , 2 ] is: 2026The number of solutions of the equation 2 2 + 5 2 =2 ^3 5 2 in [- 2 , 2 ] is : 2025 Full Trigonometric Equations list All NTA Abhyas JEE Main PYQs