2. Unit 1: Trig functions and the unit circle The unit circle is very important in trigonometry. The unit circle is a visual that helps us understand the sins, cosines, and tangents, radians, and degrees for a certain value. Trig functions are used to relate the angles of a triangle to the lengths of the sides of a triangle. Trig functions are important in the study of triangles.
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4. These graphs are periodic, meaning they repeat in a certain patternThis is a video on graphing the cosine function. If you click it a few times it should work
5. Unit 3: simplifying trig expressions and verifying trig identities These identities are important so we can break down the equation and make it easier to work with!
6. Unit 4: solving trig equations This video shows multiple equations being solved In this unit, equations are satisfied by some values but not others. You can factor, use the quadratic equation, solve algebraically, or solve by graphing!
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8. SSA: two sides and an angle (not the included one) are known
