a . Two vectors A and B are given at a point P(r, Ɵ, Φ) in space as A = 10a r + 30a Ɵ – 10a Φ B = 3a r + 10a Ɵ – 20a Φ Determine: 2A – 5B B A X B Repeat the above solution if the two vectors A and B...

a.

Two vectors A and B are given at a point P(r, Ɵ, Φ) in space as

A = 10a_r
+ 30a_Ɵ
– 10a
_Φ

B = 3a_r
+ 10a_Ɵ
– 20a
_Φ

Determine:

1. 2A – 5B


2. B

• A X B

1. Repeat the above solution if the two vectors A and B given at a point P(r, Ɵ, Φ) in space reduced by 30 percent.

1. Discuss the differences in solution
   a
   and
   b
   above.