\operatorname { tan } 22 \frac { 1 } { 2 } \pi – InterviewSolution

1.	\operatorname { tan } 22 \frac { 1 } { 2 } \pi
Answer» tan45=1tan2(22.5)=12tan(22.5)/(1-tan^2(22.5))=12tan(22.5)=1-tan^2(22.5)tan^2(22.5)+2tan(22.5)-1=0so tan22.5=0.55

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