Use the binomial theorem to expand and where possible simplify the expression (1+i)^6 where I=sqrt -1

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Is the figure congruent? yes or no?

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