Expand and use special angles

cos(225º – 180°)

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

What is the order of magnitude for the number of liters in a large bottle of soda served at a party