Question

Which of the following choices is a coterminal angle of 70°?

Answer 1

430°

Explanation:

Coterminal angles can be positive or negative. To find the coterminal angles, simply add or subtract 360 degrees as many times as necessary from the reference angle. In this case, all the answer options are positive, so we will only add the 360°.

Therefore:

`\begin{gathered} 70+360=430\text{\degree} \\ 70+360+360=790\text{\degree} \end{gathered}`

Which means that of the given options, the only coterminal angle with 70° is 430°