solve the trigonometry question 12 send me solution
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tan∅ = √2-1
⇒ 1/cot∅ =√2-1
⇒ cot∅ = 1/(√2-1)
⇒ cot∅ = (√2+1)/(√2-1)(√2+1)
⇒ cot∅ = (√2+1) / (2-1)
⇒ cot∅ = √2+1
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