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```
if arg(z1/z2)=p/2 then find the value of |(z1+z2)/z1-z2)|
if arg(z1/z2)=p/2 then find the value of |(z1+z2)/z1-z2)|

```
2 years ago

Arun
25768 Points
```							Dear kanish  |(z1+z2)/z1-z2)| = 1|(z1+z2)|2  = |z1|2   + |z1|2  +  2|z1||z2|cos (θ1 -θ2)and|(z1-z2)|2  = |z1|2   + |z1|2    - 2|z1||z2|cos (θ1 -θ2)where  θ1 and θ2   are arguments of z1 and z2θ1 -θ2 = pie/2       so  cos (θ1 -θ2) = 0so both of them are equal   RegardsArun
```
2 years ago
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