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## Maths Test: Right Triangle Trigonometry and Sinusoidal Functions

I have decided to move your test to Wednesday 13th (Block E) and Thursday 14th (Block G). The test will cover the following areas:

- Sinusoidal functions of the form A Sin (B(x – C)) + D and A Cos (B(x – C)) + D (in particular, could you model a periodic function with Sine and Cosine? How would they be different?)
- Simple right-triangle trig: finding a missing side or a missing angle
- Multi-step problems: finding a missing side or angle in order to find a further missing side or angle
- Word problems, in which you need to construct a diagram first, and then find missing values
- You will
**also**need to be able to use trigonometric ratios to show whether or not a triangle exists. For instance, a triangle with angles of 30 degrees, 60 degrees and 100 degrees does not exist, neither does a triangle with sides 10cm, 5cm and 4cm.

The test will NOT include:

- Area formula
- Sine Rule
- Cosine Rule

Revision resources are:

- The diagram I prepared explaining the effect of A, B, C and D in A Sin (B(x – C)) + D
- The materials in my GDrive shared documents for Block E and Block G

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