**IB SL Trigonometry**

Using the Cosine rule:

Using the Sine rule:

Converting between radians and degrees:

Calculating area and arc length of sectors:

Example questions:

Past Paper questions on sectors and segments:

Calculating exact values for some specific values of sin, cos and tanx:

CAST diagram:

Using the CAST diagram to solve trig equations:

Using the CAST diagram with multiple angles:

Transforming non trig functions past paper questions:

Graphing trig functions with phase shifts etc:

Slightly more difficult example of graphing trig functions

One more trig function graphing problem:

Double angle identities:

Converting between sinx, cosx and double angles:

Solving trig identities using quadratic formula:

Factorising to solve trig equations:

Using trig identities to solve equations 1:

Using trig identities to solve equations 2:

Ferris wheel problem:

**Trig Past Paper Questions**

Past Paper questions on solving trig equations (factorising):

Past Paper questions on converting between sinx and cosx using double angles etc:

Past paper question on transforming non trig graphs (and circular motion):

Past paper question on transforming trig graphs:

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