Edexcel FP2 2013 June — Question 2

Exam BoardEdexcel
ModuleFP2 (Further Pure Mathematics 2)
Year2013
SessionJune
TopicComplex numbers 2

2. $$z = 5 \sqrt { } 3 - 5 i$$ Find
  1. \(| z |\),
  2. \(\arg ( z )\), in terms of \(\pi\). $$w = 2 \left( \cos \frac { \pi } { 4 } + i \sin \frac { \pi } { 4 } \right)$$ Find
  3. \(\left| \frac { w } { z } \right|\),
  4. \(\quad \arg \left( \frac { w } { z } \right)\), in terms of \(\pi\).