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Airplane Vectors, Using Trigonometry

Q: A commuter airplane starts from an airport and takes the route shown in Figure P3.17. It first flies to city A located at 175 km in a direction 30.0° north of east. Next, it flies 150 km 20.0° west of north to city B. Finally, it flies 190 km due west to city . . . → Read More: Airplane Vectors, Using Trigonometry

Graphing Trig Functions

Q: How do I graph trigonometry functions?

A: Always picture the regular graphs of y=sin(x) and y=cos(x) and then apply each of the transformations to those original graphs.

The amplitude of each graph is 1, and the period is .

The general equation for a sine graph is: . . . → Read More: Graphing Trig Functions

Guides to Trig Functions has an excellent guide to Trigonometric Functions.

These are links to PDF files.

Part 1 (Angle Basics) Part 2 (The Unit Circle) Part 3 (Trig Ratios) Part 4 (Graphing Trig Functions I) Part 5 (Graphing Trig Functions II) Part 6 (Graphing Trig Functions III) Part 7 (Radian Graphs) Part 8 (Real Life Applications . . . → Read More: Guides to Trig Functions

Guides to Trig Equations

Check out these guides from

Part 1 (Solving Trig Equations by Graphing) Part 2 (Proving Trig Identities) Part 3 (Sum and Difference Identities)