Which is the angle measure represented by 2 rotations counterclockwise?

The square root of 9x plus 7 plus the square rot of 2x equall to 7

What is the ratio of the length of an object in yards to the length of the same object in miles?

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