NDA2018MathematicsTrigonometric EquationsActual
What is/are the solutions of the trigonometric equation cosec x + x = 3 , where 0 x 2 ?
Options
- A5 3 only
- B3 only
- Conly
- D, 3 , 5 3
Correct answer
B. 3 only
Step-by-step solution
Given equation: aligned & cosec x+ x= 3 & cosec x- x= 1 3 & 2 cosec x= 3 + 1 3 = 4 3 & cosec x= 2 3 & x= 3 2 aligned Possible values of x= 3 , 2 3 Option (2) is correct.