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а) ![sin0+cos frac{ pi }{2}+sin^{2} frac{ pi }{4}=0+0+(frac{ sqrt{2} }{2})^{2}=frac{2}{4}=0.5 sin0+cos frac{ pi }{2}+sin^{2} frac{ pi }{4}=0+0+(frac{ sqrt{2} }{2})^{2}=frac{2}{4}=0.5](https://tex.z-dn.net/?f=sin0%2Bcos+frac%7B+pi+%7D%7B2%7D%2Bsin%5E%7B2%7D+frac%7B+pi+%7D%7B4%7D%3D0%2B0%2B%28frac%7B+sqrt%7B2%7D+%7D%7B2%7D%29%5E%7B2%7D%3Dfrac%7B2%7D%7B4%7D%3D0.5)
б)![3sinfrac{ pi }{6}+2cospi+ctg^{2} frac{ pi }{6}= frac{3}{2}-2+ (sqrt{3})^{2}=1.5-2+3=2.5 3sinfrac{ pi }{6}+2cospi+ctg^{2} frac{ pi }{6}= frac{3}{2}-2+ (sqrt{3})^{2}=1.5-2+3=2.5](https://tex.z-dn.net/?f=3sinfrac%7B+pi+%7D%7B6%7D%2B2cospi%2Bctg%5E%7B2%7D+frac%7B+pi+%7D%7B6%7D%3D+frac%7B3%7D%7B2%7D-2%2B+%28sqrt%7B3%7D%29%5E%7B2%7D%3D1.5-2%2B3%3D2.5)
в)![6sinfrac{ pi }{6}-2cos0+tg^{2} frac{ pi }{3}= frac{6}{2}-2+ (sqrt{3})^{2}=3-2+3=4 6sinfrac{ pi }{6}-2cos0+tg^{2} frac{ pi }{3}= frac{6}{2}-2+ (sqrt{3})^{2}=3-2+3=4](https://tex.z-dn.net/?f=6sinfrac%7B+pi+%7D%7B6%7D-2cos0%2Btg%5E%7B2%7D+frac%7B+pi+%7D%7B3%7D%3D+frac%7B6%7D%7B2%7D-2%2B+%28sqrt%7B3%7D%29%5E%7B2%7D%3D3-2%2B3%3D4)
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