How do you find the derivative of y=ln(cos(x))y=ln(cos(x)) ?

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

In the diagram below? p is circumscribed about quadrilateral abcd. what is the value of x

The graph below shows the height of a projectile t seconds after it is launched. if acceleration due to gravity is -16 ft/s2, which equation models the height of the projectile correctly?