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

If |a×b| =16, |a| = 10 and a.b=12 find |b|.

Open in App
Solution

¯aׯb=16;|¯a|=10;¯a¯b=12
absinθ=161abcosθ=122
Dividing equations 1/2
sinθcosθ=1612=43
tanθ=43
sinθ=4/5
absinθ=16
10×b×45=16
b=16×510×4=2
¯b=2

1204419_1244611_ans_ec517141d8164a948aec570f90abbf30.JPG

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