1.) Find all anglesbetween 0and 180satisfying the given equation. (Enter answers as a comma-separated list.)

tan() =24

=

2.) Find all anglesbetween 0and 180satisfying the given equation. (Enter answers as a comma-separated list.)

cos() =2/7

=

3.) Rewrite the expression as an algebraic expression inx.

sin(tan¹(x))

4.) To estimate the height of a mountain above a level plain, the angle of elevation to the top of the mountain is measured to be 32. One thousand feet closer to the mountain along the plain, it is found that the angle of elevation is34. Estimate the height of the mountain. (Round answer to the nearest foot.)