Explain to me how to get the answers please or just show work. We're already given the answers I just want to know how to get them.

8. A nursery plants a new tree and attaches a guy wire to help support the tree while its roots take hold. An eight foot wire is attached to the tree and to a stake in the ground. From the stake in the ground the angle of elevation of the connection with the tree is 420. Find to the nearest tenth of a foot, the height of the connection point on the tree. 8' X 420 9. Solve the following triangles. (a) 42' 750 22 cm (b) 15 25 (c) 15 12 10. Given the vectors A = and B = : (a) Find the magnitude of each vector (b) Find A . B (c) Find the angle between the vectors, to the nearest degree.11. If: 2 c: .1159 :> and;J =