Khan Academy

Amplitude & period of sinusoidal functions from equation (K-A)

Midline, amplitude, and period review (K-A)

Graph of y=sin(x) (K-A)

Graph of y=tan(x) (K-A)

Intersection points of y=sin(x) and y=cos(x) (K-A)

Proof of the Pythagorean trig identity (K-A)

Pythagorean identity review (K-A)

Using the Pythagorean trig identity (K-A)

The trig functions & right triangle trig ratios (K-A)

Trig unit circle review (K-A)

Unit circle (K-A)

Trig values of special angles (K-A)

Comparing functions: shared features (K-A)

Comparing functions: x-intercepts (K-A)

Comparing maximum points of quadratic functions (K-A)

End behavior of algebraic models (K-A)

Periodicity of algebraic models (K-A)

Symmetry of algebraic models-link (K-A)

Symmetry of algebraic models-video (K-A)

Interpreting equations graphically (example 2) (K-A)

Interpreting equations graphically (K-A)

Solving equations graphically (1 of 2) (K-A)

Solving equations graphically (2 of 2) (K-A)

Solving equations graphically (K-A)

Quadratic systems: a line and a circle (K-A)