Trig with Vectors, Complex Numbers, apps (Precalc 6)

Using the law of sines and cosines, we explor vectors, complex numbers and applications (aka "Word problems").

Using Sum & Difference Formulas

Here we find the trig functions of other angles based on the sum and difference of two angles, the double or half angle. We will prove these formulas in a different video

Some more Trig Word Problems (4.8, 4.R)

Here we use the trigonometry from our first Trig Chapter (4 in our textbook) to review how sine, cosine and tangent are used to solve word problems

Inverse Trig Functions and Trig Word Problems

Use the inverse trig functions to find unknown angles and use everything you know about sine cosine and tangent to solve word problems

Hon Algebra 2 Trig Test 1 answers

Some are getting ready for calculus by taking a Honors Algebra 2 with Trigonometry. Here are topics from Chapter 1 of the Sullivan text that are part of any Honors Algebra 2 class.

Graphing Trig Functions (4.1-4.6)

Here we have basic angles in radians, and graphing the trig functions of these angles. These functions, with their ability to transform waves with different periods and amplitudes, can be used to mathematically express all sorts of waves we find in real life. These ideas are from Sections 4.1 to 4.6 of our Precalculus book by Larsen.

Radians and Unit Circle Trig Quiz Answers

Quiz answers on radian angles, unit circle and right triangle trig (Sections 4.1-4.4)