Vectors
Asked by | 12th Mar, 2010, 10:16: PM
Expert Answer:
Dear Student
a X(a Xc)+ b =0
==> a X(a Xc)= - b
ax ac sin theta =-b
Here by defenition of vector cross product a is per pendicualr
a^2c sin theta= -b
2sintheta=-1
Sin theta= -1/2
Theta=-30
So the angle is pi/6
Regards
Team
Topperlearning.com
Answered by | 13th Mar, 2010, 05:59: PM
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