Well basically the questions are

A hawk is on top of a tree looking down at a mouse with the angle of depression at 63 degrees. 20 feet below the hawk, an owl is looking at a mouse with an angle of depression at 48 degrees. What is the height of the tree?

And then

y=xsquared tan x is the function positive, negative, or neither?

If you can point out how to do both questions step by step, it'll be appreciated! Thanks for helping!