Posted by Mike on Thursday, November 11, 2010 at 5:55am.
Are you showing that they are identities ?
if so,
LS = (sin^2t/cos^2t)(cost)
= sin^2t/cost
RS = 1/cost - cost
= (1 - cos^2t)/cost
= sin^2t/cost
= LS
The second one works the same way, try it.
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