# vectors

Three vectors have the same length (L) and form an equilateral triangle. Find the magnitude and direction of the vectors:

(a)A+B

(b)A-B

(c)A+B+C

(d)A+B-C.

Please see attachment below for figure.

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#### Solution Preview

See attachment below for full response.

Questions are taken from the course book 'Physics with modern physics', Richard Wolfson & J.

M. Pasachoff, pp 60 - 63

Three vectors have the same length L and form an equilateral triangle, shown here

as figure 1. Find the magnitude and direction of the vectors Ã¥, ,

, .

Ã¥

A Ã¥

B CÃ¥ , and

(a) Ã¥

A + Ã¥

B(b) Ã¥

A âˆ’ Ã¥

B

(c) Ã¥

A + Ã¥

B + CÃ¥ (d) Ã¥

A + Ã¥

B ...

#### Solution Summary

Getting used to vectors is encouraged. The vectors with the same length to form an equilateral triangle is examined. The magnitude and direction of the vectors are calculated.