What percent of the circle is represented by the red portion of the picture

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Choose the correct classification of 3x4 − 9x3 − 3x2 + 6. 5th degree polynomial 4th degree polynomial 9th degree polynomial 24th degree polynomial