Why Kaysons ?

Video lectures

Access over 500+ hours of video lectures 24*7, covering complete syllabus for JEE preparation.

Online Support

Practice over 30000+ questions starting from basic level to JEE advance level.

Live Doubt Clearing Session

Ask your doubts live everyday Join our live doubt clearing session conducted by our experts.

National Mock Tests

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

Organized Learning

Proper planning to complete syllabus is the key to get a decent rank in JEE.

Test Series/Daily assignments

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

SPEAK TO COUNSELLOR ? CLICK HERE

Question

Solution

Correct option is

 ab > 4 and 

             

   

             

             

as tan2 α > 0, ab > 4.

SIMILAR QUESTIONS

Q2

If αβ are positive acute angles and  then tan α = k tanβ such that

Q3
Q5

The maximum value of (cos α1) (cos α2) …(cos αn) under the restriction 0 ≤ α1, α1,…., α1 ≤ π/2 and (cos α1) (cos α2) …

(cos αn) = 1 is

Q6

The number of integral values of k for which the equation 7 cos x + 5 sin x = 2k + 1 has a solution is

 

Q7

 

                                                              

Q8

  

    

are two matrices such that AB is the null matrix, then

Q9

 is independent of θ, then

Q10

The equation sin4 x + cos4 x = a has a real solution for