How many solutions does 2=5 have

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

What are different types of statistical programs

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