calculate direction of : vector A=2i-cap + 4j-cap.
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unit vector a^=∣a∣a
Given a=2i^+3j^+k^
∣a∣=22+32+1
=14
unit vector a^=142i^+3j^+k^
=142i^+143j^+141k^
zero vector 0=0i^+0
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see in attachment....
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