Zad 11/350 Oblicz Tangens 135 - Sinus 135 Stopni b) Sinus 150 stopni - Cosinius 150 stopni c) Cosinius 120/Tangens 150 x sinus 135 stopni/Cosinius 150

a)  tg135-sin135=tg(180-45) - sin(180-45)=- tg45 - sin45= -1-√2/2 b) sin150 - cos150=sin(180-30) - cos(180- 30)=sin30 +cos30=1/2+√3/2=[latex] frac{1+ sqrt{3} }{2} [/latex] c) [latex] frac{cos120}{tg150} * frac{sin135}{cos150}=frac{-cos60}{ frac{sin150}{cos150} }* frac{sin45}{cos150} =frac{-cos60}{sin30} *sin45= frac{-1/2}{1/2} * frac{ sqrt{2} }{2} =- frac{ sqrt{2} }{2} [/latex]