Вычислите: 1) 1-tgПи/6+tg^2Пи/6-tg^3Пи/6 2) 1+cosПи/6+ cos^2Пи/6+cos^3Пи/6

1) $1- \frac{1}{ \sqrt{3}} + \frac{1}{3}- \frac{1}{3 \sqrt{3}} = \frac{4}{3}- \frac{4}{3 \sqrt{3} }= \frac{4}{3}(1- \frac{1}{ \sqrt{3} } )= \frac{4( \sqrt{3}-1)}{3 \sqrt{3} }$
2) $1+ \frac{ \sqrt{3}}{2}+ \frac{3}{4}+ \frac{3 \sqrt{3}}{8}= \frac{8+4 \sqrt{3}+6+3 \sqrt{3}}{8}= \frac{14+7 \sqrt{3} }{8} = \frac{7(2+ \sqrt{3})}{8}$