300° and ______ are coterminal angles of -60°.
- -420°
- 360°
- -300°
- None of these
Explanation
Coterminal angles differ by full rotations of 360°.
To find a coterminal angle of -60°, add or subtract 360°:
-60° + (-360°) = -420° → This is coterminal with -60°.
So, -420° and -60° share the same terminal side.
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