Prove that the angle between a line represented by equation (x²+y²)sin²A=(xcosB-ysinB)² is 2A​

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x

3382-299=3383- ? fill in the blank?

The measure of an angle is 117°. what is the measure of a supplementary angle?