Select all that are measures of angles coterminal with a –60° angle.

Coterminal angles differ by a whole-number multiple of 360°. Adding or subtracting 360° from –60° gives angles such as –420°, 300°, and 660°; –780° is also coterminal because it differs from –60° by –720°. Therefore, the correct choices are –780°, –420°, 300°, and 660°.

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