Name the two set(s) of numbers to which -7 belongs.

How many degrees does the hour hand move from 3: 00 to 5: 30?

If the discriminant if a quadratic equation is 4 which statement describes the roots?

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b