Which part of the inner ear houses receptors for angular (rotational) movement of the head?

Answer is: receptors for angular (rotational) movement of the head is semicircular duct.

Semicircular ducts (semicircular canals) are three interconnected tubes, each forms two-thirds of a circle (horizontal, superior and posterior semicircular canals).

Semicircular ducts work as a motion sensor and communicate with the brain.