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Steps and Understanding :
1) Angle between vectors by cos theta.
A. B = |A||B| cos a
2) Angle between vectors by sin theta
A x. B = |A||B| sin a
3) Area of parallelogram who's adjacent sides are A and B is given by
|A x B| .
4) Vector Triple Product :
(a x b) x c = b (a. c) - a (b. c)
For Calculation see pic.
Anwer : 69,71 see pic 1
72,73 see pic 2
74 see pic 3
70 see pic 4
1) Angle between vectors by cos theta.
A. B = |A||B| cos a
2) Angle between vectors by sin theta
A x. B = |A||B| sin a
3) Area of parallelogram who's adjacent sides are A and B is given by
|A x B| .
4) Vector Triple Product :
(a x b) x c = b (a. c) - a (b. c)
For Calculation see pic.
Anwer : 69,71 see pic 1
72,73 see pic 2
74 see pic 3
70 see pic 4
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Anonymous:
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