can you please help me with this it's grade 11 mathematics

21 Two radar stations 2.5 miles apart are tracking an airplane. the straight-line distance between Station A and the plane is 7 miles. the straight-line distance between station B and the plan is 9 miles. What is the angle of elevation from Station B to the plane? 1. Draw a diagram 2. Which formula to use? - Explain. 3. Calculate. 4. Type the final conclusion statement with appropriate unit in the box provided and attach your work. 16 1. Name the type of function 2. State the asymptote 3. State the range 4. State the domain 5. State the y-intercept 12 A boat travels 16 m/s [East] ,in a stream of 21 m/s [South]. What is the magnitude of the resultant velocity