CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
285
You visited us 285 times! Enjoying our articles? Unlock Full Access!
Question

Solve for α, which satisfy: maxθϵR{5sinθ+3sin(θα)}=7

A
α=nπ±π3
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
α=2nπ±π6
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
α=2nπ±π3
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
α=2nπ±2π3
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C α=2nπ±π3
maxθR{5sinθ+3sin(θα)}=7

maxθR{5sinθ+3sinθcosα3cosθsinα}=7

maxθR{sin(5+3cosα)+cosθ(3sinα)}=7
As a2+b2asinx+bcosxa2+b2
(5+3cosα)2+(3sinα)2=7
34+30cosα=49
cosα=12α=2nπ±π3

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