Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5
Banner 6

Q.

α=a1i+a2j+a3k where a1, a2, a3 are ratio- nal numbers. If α makes an angle 400 with the vector β=2i+32j+4k and α is rational, then α lies in

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away
An Intiative by Sri Chaitanya

a

ZX plane 

b

YZ plane

c

XY plane

d

in the angle between -β and α

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

cos450=α.βa.β  12=a12+32a2+4a3a12+a22+a32 2+18+16 6a12+a22+a32=2a1+6a2+4a32=rational     a3=0     α lies on xy plane

Watch 3-min video & get full concept clarity

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon