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#2 Help Me ! » trig ident. » 2008-04-22 08:35:26

ragingkiwi
Replies: 6

prove:

1/sinx -sinx = cosx/tanx


1-sinx/cosx = cosx/(1 + sinx)

1/tanx + tanx = 1/(sinxcosx)

(1-2sin^2x)/(cosx+sinx) = cosx-sinx


explanations for each one would be greatly appreciated.. and a few hints to get confident with these smile smile   thanks for help!

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