\operatorname { tan } \frac { \pi } { 12 } \operatorname { tan } \frac – InterviewSolution

InterviewSolution

1.	\operatorname { tan } \frac { \pi } { 12 } \operatorname { tan } \frac { 5 \pi } { 12 } \operatorname { tan } \frac { 7 \pi } { 12 } \operatorname { tan } \frac { 11 \pi } { 12 } = 1
Answer» Tan15 × tan75 × tan 105 ×tan 165tan (90-75) ×tan75 ×tan (270-165)×tan165cot75× tan75×cot165 ×tan1651×11

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