wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

If A=cos2x+1cos2x,B=cosx1cosx x(2n±1)π2, then the minimum value of AB is

A
2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
22
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
12
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
None of these
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 22
AB=cos2x+1cos2xcosx1cosx=(cosx1cosx)2+2(cosx1cosx)
=(cosx1cosx)+2(cosx1cosx)
AB=B+2B22

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Definition of Function
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon