1. TRIGNOMETRY

2. Sine curve Graph . Sin + ve If one angle is X the other angle which gives the same value . 180−X.

3. Cosine curve Graph . Cos+ ve If one angle is X the other angle which gives the same value is 360−X

4. The sine rule Sine and cosine can be used on any triangle, not just right-angled triangles. But as there is no right angle, there is no hypotenuse, so different formulae are needed

5. The "cosine rule" a 2 =b 2 +c 2 - 2bccosA

6. THE END done by :Danish section:11B5