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View Full Version : Verifying this identity?


hrc13
Dec 3, 2011, 08:32 PM
[sin2x (sin3x sin1x)]/[cos2x (cos3x cos1x)]=tan2x

jcaron2
Dec 6, 2011, 08:17 AM
If you want an answer to your question, you might consider taking a few seconds to actually reread what you posted. Then you might notice that simply copying and pasting doesn't work well for math problems on this site. The + and - signs tend to get dropped.

Try retyping the problem manually, and then we'll be able to help you.