How do you find an angle with a positive measure and an angle with a negative measure that are coterminal with $-80^circ$ ?

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Answer 1 · 2018-06-14T05:33:17

$280^@, -440^@$

Given: $-80^@$

To be a coterminal angle, you only need to add or subtract multiples of $360^@$ :

$-80^@ + 360^@ = 280^@$

$-80^@ - 360^@ = -440^@$

How do you find an angle with a positive measure and an angle with a negative measure that are coterminal with -80^circ-80^circ?