What basic trigonometric identity would you use to verify that sinx cosx tanx=1-cos^2x

When only separate discreet points are graphed it is called?

What is the greater volume 72 quarts or 23 gallons

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years