A surveyor wishes to find the distance across a river while standing on a small island. If she measures distances of a=30ma=30ma=30m to one shore, c=60mc=60mc=60m to the opposite shore, and an angle of B=100°B=100\degreeB=100° between the two shores, find the distance between the two shores.

A surveyor wishes to find the distance across a river while stand...

0. Fundamental Concepts of Algebra3h 29m

1. Equations and Inequalities3h 27m

2. Graphs1h 43m

3. Functions & Graphs2h 17m

4. Polynomial Functions1h 54m

5. Rational Functions1h 23m

6. Exponential and Logarithmic Functions2h 28m

7. Measuring Angles39m

8. Trigonometric Functions on Right Triangles2h 5m

9. Unit Circle1h 19m

10. Graphing Trigonometric Functions1h 19m

11. Inverse Trigonometric Functions and Basic Trig Equations1h 41m

12. Trigonometric Identities 2h 34m

13. Non-Right Triangles1h 38m

14. Vectors2h 25m

15. Polar Equations2h 5m

16. Parametric Equations1h 6m

17. Graphing Complex Numbers1h 7m

18. Systems of Equations and Matrices1h 6m

19. Conic Sections2h 36m

20. Sequences, Series & Induction1h 15m

21. Combinatorics and Probability1h 45m

22. Limits & Continuity1h 49m

23. Intro to Derivatives & Area Under the Curve2h 9m