unit vectors

Asked by  | 12th Jun, 2008, 09:20: AM

Expert Answer:

use the [A1 + A2] [A1 + A2] = 3

find the value of A1.A2 from the above formula

now from the question (A1+A2) • (2A1+ A2) multiply the terms and put the value of A1.A2 from above and the values of [A1]2 and [A2]2 which is 1.

Answered by  | 16th Jul, 2008, 05:22: PM

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