Dhamaal.app
0 votes
27 views
in Sets, relations and functions by (53.5k points)
edited by

For θ > π/3, the value of f(θ) = sec2 θ + cos2θ  always lies in the interval 

(A)  (0, 2)

(B)  (0, 1)

(C)  (1, 2)

(D)  [2, ∞)

1 Answer

+1 vote
by (53.8k points)
selected by
 
Best answer

Correct option  (D) [2, ∞)

Explanation :

Here, 

 Therefore, the required interval is [2, ∞).

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

...