In this lesson, we'll verify the fundamental trig identities and simplify trig expressions using algebra and the identities.

In this lesson, we'll use sum and difference formulas for sine, cosine, tangent, and their cofunctions, and we'll use sum and difference formulas to verify identities.

In this lesson, we'll use double-angle formulas to find exact values and to verify identities, we'll use half-angle formulas to find exact values, and we'll use reduction formulas to simplify an expression.

In this lesson, we'll express products as sums and sums as products.

In this lesson, we'll solve linear trig equations in sine and cosine, solve equations involving a single trig function, and solve right triangle problems.

A cheat sheet of all of the important topics from this unit.