Khan Academy

Intro to arccosine (K-A)

Intro to arcsine (K-A)

Intro to arctangent (K-A)

Inverse trigonometric functions review (K-A)

Restricting domains of functions to make them invertible (K-A)

Using inverse trig functions with a calculator (K-A)

Solving cos(θ)=1 and cos(θ)=-1 (K-A)

Solving sinusoidal equations of the form sin(x)=d (K-A)

Trig word problem: solving for temperature (K-A)

Trigonometric equations review (K-A)

Finding trig values using angle addition identities (K-A)

Proof of the cosine angle addition identity (K-A)

Proof of the sine angle addition identity (K-A)

Review of trig angle addition identities (K-A)

Using the cosine angle addition identity (K-A)

Using the cosine double-angle identity (K-A)

Trig identity reference (K-A)

Using trig angle addition identities: finding side lengths (K-A)

Using trig angle addition identities: manipulating expressions (K-A)

Using trigonometric identities (K-A)

Components of vectors (example 2) (K-A)

Components of vectors (K-A)

Equivalent vectors (K-A)

Intro to vectors and scalars (K-A)

Recognizing vectors (K-A)