IB SL Trigonometry

Using the Cosine rule:

Using the Sine rule:

Calculating area and arc length of sectors:

How to remember the values on the unit circle:

Converting between radians and degrees:

Finding which quadrant an angle is in:

Graphing trig functions with phase shifts etc:

Slightly more difficult example of graphing trig functions

One more trig function graphing problem:

How to work out which quadrant an angle is in:

Double angle identities:

Solving trig identities using quadratic formula:

Factorising to solve trig equations:

IB SL Trig Playlist