NTA Abhyas JEE Main2020MathematicsTrigonometric Ratios & IdentitiesPractice
Let f x = m a x tan x , cot x . Then the number of roots of the equation f x = 1 2 in 0,2 π is
Options
- A0
- B1
- C2
- D4
Correct answer
A. 0
Step-by-step solution
From the graph of tan x and cot x , we see that the range of f x is - 1,0 ∪ 1 , ∞ . Hence, f x = m a x   tan ⁡ x ,   cot ⁡ x and g x = 1 2 do not cut each other ⇒ The number of solutions is zero.