HELP ME!! The number of tiktoks celia can make varies directly with the numbers of hours she spends making them. She can make 8 tiktoks in 1/2 an hour. How many tiktoks can she make in 3 hours?

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