What is this equation/identity?

Question

fanduekisses · Answer

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fanduekisses · Answer

I am writing a program that will calculate answers to different types of equations lol, so far I only have two(pythagorean theorem and distance formula) but I came across this one and I'd like to know more about it. Thanks ^_^

anonymous · Answer

this is what is called a co-function identity

fanduekisses · Answer

oh ok when is it used though, for what purpose?

fanduekisses · Answer

just to find sin(theta)?

anonymous · Answer

this will help http://www.virtualnerd.com/algebra-2/trigonometric-identities-equations/basic-identities/basic-identities-definitions/cofunction-identities

anonymous · Answer

from the way i see it its just another way of finding  angles if you dont want to memories all the bs trig offers lol

fanduekisses · Answer

oh ok thank you :D