Description 10th class
TRIGNOMETRY : TRIGNOMETRY
Slide 2 : Sine curve Graph . Sin + ve If one angle is X the other angle which gives the same value . 180-X.
Cosine curve Graph. : Cosine curve Graph. Cos+ ve If one angle is X the other angle which gives the same value is 360-X
The sine rule : 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
The "cosine rule" : The "cosine rule" a2=b2+c2- 2bccosA
Slide 6 : THE END done by :Danish section:11B5
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