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OpenStudy (avanti):
which of the following are identities? (Answers listed below)
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OpenStudy (avanti):
OpenStudy (anonymous):
Looks like a quiz question.
OpenStudy (mathmate):
There are two, so you need to choose all that apply. "which of the following \(are \) identities" If you are stuck, put some arbitrary values for x and y and see which ones do \( not \) work, and eliminate them. The best approach is to study the double angle formulae, and check the identities.
OpenStudy (avanti):
I know that A. is an answer, and I think that B and D are NOT answers but i don't know about C
OpenStudy (avanti):
nevermid i got it, thanks :)
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OpenStudy (mathmate):
Look up the standard curve of tan(x), and you will see readily!
OpenStudy (mathmate):
Perfect!
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