1+sinX + cosX + sin2X + cos2X = 0 tg2X

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Originally Posted by shadowmist 1+sinX + cosX + sin2X + cos2X = 0 tg2X What is "tg"? Do the 2s indicate "twice x" or "squared"? What were the instructions? Where are you stuck? Please be complete. Thank you!

twice x instructions: find x.