Could someone help me out with the following equation please. I'm trying to calculate the following equation in C:
First off, is there a function in C to do cos or sin^2(x)? I coulnd't find one, just the ordinary sin/cos functions.
Because I couldn't find out how to do that, I used the following trig identities which I found:
Are these correct?
Thanks for any help!
Code:
1
C = ---------------------------------------------------
sqrt( cos^2(latitude) + (1-f)^2 * sin^2(latitude) )
First off, is there a function in C to do cos or sin^2(x)? I coulnd't find one, just the ordinary sin/cos functions.
Because I couldn't find out how to do that, I used the following trig identities which I found:
Code:
cos^2(x) = 1/2 + 1/2 cos(2x)
and
sin^2(x) = 1/2 - 1/2 cos(2x)
Are these correct?
Thanks for any help!
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