Q. 15

Write the least value of cos2 x + sec2 x.

Answer :

We know that cos2x and sec2x ≥ 0


By applying AM and GM we get,



cos2 x + sec2 x≥2


Least value of the given function is 2.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Trigonometric Functions - 0152 mins
Trigonometric Functions - 0568 mins
Trigonometric Functions - 0658 mins
Trigonometric Functions - 0366 mins
Trigonometric Functions - 0268 mins
Trigonometric Functions - 0466 mins
Interactive Quiz on trigonometric ratios & identities73 mins
Trigonometric Functions - 0865 mins
Trigonometric Functions - 0760 mins
Master Solving Problems of trigonometry45 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses