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Compound angle examples

Example

1

2

4

5

3

 

Example

6

  1. Rearrange to set equation to zero.
  2. Eliminate the Cos2x˚ term, turning the equation into  a quadratic.
  3. Factorise
  4. Solve each set of brackets.
  5. Remember to combine answer at end !

 

7

 

Example

8

9

 

Example

10

 

 

© Alexander Forrest