Hello,

A and B are coterminal angles if A-B=360.

Thus it has to be 321 or -321. According to the definition, it'll be -321 degrees 50', since 38-(-321) ~ 360

The problem is that when we are talking about degrees ', the ' corresponds to minutes of degrees. 1 degree makes 60' (1 degree is like an hour). So it can't be -321°50', since 50'+50' 1°=60'.

So it's none of the solutions.

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Can you continue ?