Ok we are learning about complementary angles/ sadly more algebra so one side is 72 and the other side is (2x + 8) all of this = 90
how I don't get it sooo please help me!!

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

Wrote and expression for the difference of p and 4

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