IB skill practice

Use rotations in the plane

Apply rotation matrices and angle relationships to coordinate transformations.

Paper 1, Paper 2 5 marks Difficulty 5

Use rotations in the plane - visual perpendicular check

A point is rotated about the origin by the angle shown, \(315^\circ\). Enter the rotation angle in degrees.

Worked practice: result and interpretation

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