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Hi Friends,
For my work, I need to calculate fixed values of cos/sine function.
Can you tell me the right approach:
1) Do I use a lookup available somewhere
2) Is there a formula/shortcut that will help me in this
For example, currently I am looking for values for:
* m1 = cos(4pi/16)
* m2 = cos(6pi/16)
* m3 = cos(2pi/16) - cos(6pi/16)
* m4 = cos(2pi/16)+ cos(6pi/16))
Regards,
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Firstly approaching such question u should have some basic knowledge such as
There are many ways of solving these questions but I guess this formula would solve any angles
For example:
Another method:
Of course there's other ways such as drawing a right-angle isosceles triangle (that is 2 angles at 45 degrees and 1 angle at 90 degrees)
- the length and breadth would be at 1 unit and the hypotenuse is
A picture can be seen in the website below:
http://www.themathpage.com/aTrig/isosceles-right-triangle.htm
Last edited by simplyjasper (2009-11-16 05:53:55)
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