Solve for x, tan 2 x + cot 2 x = 2
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taking tan 2x as y
y+1/y =2 solving we get (y-1)²=0 so y=1
⇒tan2x=1 2x=45 x=22.5
y+1/y =2 solving we get (y-1)²=0 so y=1
⇒tan2x=1 2x=45 x=22.5
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