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```        Sir,
Am not sure of some of them, could u plz help me?
1. Let e1 and e2 be the angles made by vector A and vector -A with the positive x-axis. Show that tan e1 = tan e2. Thus, giving tan e does not uniquely determine the direction of vector A.
-- the part about tan e is not clear.
2. Is it possible to add two vectors of unequal magnitudes and get zero? Is it possible to add three vectors of equal magnitudes and get zero?
Neeta```
7 years ago

Arun Kumar
IIT Delhi
256 Points
```										If$e_{1}=\theta\\ e_{2}=\pi +\theta \\tan(\theta)=tan(\pi +\theta) \\=>tan(e_{1})=tan(e_{2})$In the second partNo,YesArun KumarIIT DelhiAskiitians Faculty
```
3 years ago
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