An angle detection apparatus includes a first integrated circuit and a second integrated circuit. The first integrated circuit generates and outputs an excitation signal to a first resolver for detecting a rotation angle of a first rotating apparatus, generates a first detection sync signal for performing synchronous detection synchronized with the excitation signal for an output signal of the first resolver, and performs the synchronous detection based on the first detection sync signal to output a first angle signal of the first rotating apparatus. The second integrated circuit receives the excitation signal, generates a second detection sync signal for performing the synchronous detection synchronized with the received excitation signal, for an output signal from a second resolver for detecting a rotation angle of a second rotating apparatus, and performs the synchronous detection based on the second detection sync signal to output a second angle signal of the second rotating apparatus.