Answer:
215°
Explanation:
Coterminal angles are angles that, starting from the positive x-position, have the same terminal. In this case, to find an angle coterminal with -865 degrees, that falls into the 0 to 360 range, simply add 360 unitil the result meets the given criteria.
\(-865+360 = -505\\-505+360 = -145\\-145+360 = 215\)
Therefore, angle B measures 215°.
