Working with the graphs of trigonometric functions Working with trigonometric relationships in degrees Calculating the area of a triangle using trigonometry Using bearings in trigonometry Video ...

Watch this video to learn about solving trigonometric equations. Let's remind ourselves of what the sine graph looks like so that we can see how many solutions we should be expecting: Therefore ...

We would advise students to not miss out on the following formulas at any cost. 1. sin-1 x = - sin-1 x 2. cos-1 x = π - cos-1 x 3. tan-1 (-x) = -tan-1 x 4. cosec⁻¹(-x) = -cosec⁻¹x 5.