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OpenStudy (rea201):
Is there any identity for 1-cos^2(x)
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OpenStudy (emilylauren):
yes
OpenStudy (emilylauren):
1-cos^2(x)= sin^2(x)
OpenStudy (rea201):
Ok thank you I drew a major blank.
OpenStudy (emilylauren):
it's part of the Pathagorean Identities :)
OpenStudy (rea201):
I tried looking it up online but didn't find anything.
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