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IJC/06/II/1 The angle between the unit vectors a and b is 0. By expanding the scalar product, show that (3a-b) (a+3b)= 8cos 0. Given that 0= 60°, show that the length of projection of (3a-b) onto (a+3b) is V13

IJC/06/II/1 The angle between the unit vectors a and b is 0. By expanding the scalar product, show that (3a-b) (a+3b)= 8cos 0. Given that 0= 60°, show that the length of projection of (3a-b) onto (a+3b) is V13

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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IJC/06/II/1 The angle between the unit vectors a and b is 0. By expanding the scalar product, show that (3a-b) (a+ 3b) =8cos 0. %3D 4 Given that 0= 60°, show that the length of projection of (3a-b) onto (a+3b) is V13 %3D
Transcribed Image Text:IJC/06/II/1 The angle between the unit vectors a and b is 0. By expanding the scalar product, show that (3a-b) (a+ 3b) =8cos 0. %3D 4 Given that 0= 60°, show that the length of projection of (3a-b) onto (a+3b) is V13 %3D
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