Which names the opposite and absolute value of -9

a -9,0 c 9,9

b 9,0 d -9,-9

True or false look at the picture pls : /

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

Which linear inequality is represented by the graph?