IB skill practice

Use complex numbers for transformations

Represent rotations and dilations using multiplication by complex numbers.

Paper 1, Paper 2 5 marks Difficulty 3

Use complex numbers for transformations - visual projection meaning

A complex multiplier has modulus 6 and argument \(30^\circ\). Enter the rotation angle of the transformation.

Worked practice: result and interpretation

Calculate the requested result first, then choose the interpretation that follows from it.