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Use addition formulas for tangent to simplify. tan(pi/5)-tan(pi/30)/1+tan(pi/5)tan(pi/30)?

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  • Use addition formulas for tangent to simplify. tan(pi/5)-tan(pi/30)/1+tan(pi/5)tan(pi/30)?


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Craig | 15/06 2016 16:12
[tan(π/5)-tan(π/30)]/[1+tan(π/5)tan(π/30)] =tan(5π/30) =tan(π/6) =(1/2)/(√3/2) =(1/2)/(2/√3) =(2/2√3) =(2/2√3)(√3) =(2√3)/6 =√3/3
Positive: 32 %