If x = 61°, find the measures of angles

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

Geometry simularity in right triangles if you need a better pic just ask

The function with the lowest output values as x approaches infinity is . the function with the greatest output values as x approaches infinity is .