In baseball, a pop fly should be easily caught if it stays in the air for 7 seconds. suppose a ball that is hit be represented by the function y= -16r^2+125t+5, where y is the height after t seconds. will the ball be considered an easy catch?

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