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♐value of tan11π/12
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Step-by-step explanation:
tan 11π/12 = tan (π-π/12) = -tan π/12
- tan π/12 = - tan 15°
- tan (60-45)° = - [ (tan 60° - tan 45°) / (1+ tan 60° * tan 45°) ]
= - [ (√3 - 1 ) / {1 + (√3)x(1)} ]
= - [ (√3-1) / (√3+1) ]
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