given that tan2x = 1 show that tanx = -1 +/- root 2

It's a trigonometric identities question
in Trigonometry Answers by Level 1 User (120 points)

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1 Answer

tan(2x)=1 impli 2x=45 deg

so x=22.5 deg

tan(22.5 deg)=1.414213562

thats kloes tu sqrt(2)
by

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