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OpenStudy (anonymous):
cosx=sqrt(1-sin^2x) is this true?
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ganeshie8 (ganeshie8):
true in first and fourth quadrants maybe..
OpenStudy (anonymous):
Thanks again
ganeshie8 (ganeshie8):
where, cos(x) is posit
ganeshie8 (ganeshie8):
does that make sense ha... :)
OpenStudy (anonymous):
so it's cos(x)=+/- xqrt(1-sin^2x)?
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ganeshie8 (ganeshie8):
yup !
ganeshie8 (ganeshie8):
http://www.wolframalpha.com/input/?i=%7Ccosx%7C+%3D+sqrt%281-sin%5E2x%29+%2C+x+is+real
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