CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
Question

The angle between the vectors a=^i+^j+^k and b=^i+2^j+^k is?

A
tan1122
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
tan113
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
tan1(12)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
90o
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is D tan1122
cosθ=¯¯¯a.¯¯b¯¯¯a.¯¯b
cosθ=(i+j+k).(i+2j+k)3.1+22+1
cosθ=1+2+13.6
cosθ=432
tanθ=22×2=122
θ=tan1(122)

flag
Suggest Corrections
thumbs-up
0
mid-banner-image
mid-banner-image
Join BYJU'S Learning Program
Select...
similar_icon
Related Videos
thumbnail
lock
Trigonometric Ratios of Allied Angles
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
Select...