You are stabding 90 feet away from a tree that is 90 feet tall and looking at the top if the tree. What is the angle of elevation from the groud to the top of the tree

Use the graph of the sine function y=2sinθ shown below

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Shelly bought a house five years ago for $150,000 and obtained an 80% loan. now the home is worth $140,000 and her loan balance has been reduced by $12,000. what is shelly's current equity?