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Grade: 11
`        PlzAnswer the  question which is in attached img with proper detailes... `
10 months ago

## Answers : (1)

Arun
22578 Points
```							Dear student Z = 1 - sina + i cos a Arg z = tan^-1 ( cos a / 1 - sina)  = Tan^-1 (1 + sina / cos a)  = Tan ^-1 ( sin a/2 + cos a/2  /(cosa/2 - sina/2))  = Tan^-1 ( tan (pi/4 + a/2))  = Pi/4 + a/2 Now |Z| = sqrt ( 1 + sin² a - 2 sina + cos²a)   = sqrt ( 2 - 2sina)
```
10 months ago
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