5cosA(tgA+2)=5cosA*(11\4)=55/4*4/5=11
cosA= \sqrt{\frac{1}{1+tg^{2}A}
cosA=\sqrt{\frac{1}{1+\frac{9}{16}}
cosA=4/5
sinA=\sqrt{1-cos^{2}A}
sinA=3/5
5sinA+10CosA=11
5cosA(tgA+2)=5cosA*(11\4)=55/4*4/5=11
cosA= \sqrt{\frac{1}{1+tg^{2}A}
cosA=\sqrt{\frac{1}{1+\frac{9}{16}}
cosA=4/5
sinA=\sqrt{1-cos^{2}A}
sinA=3/5
5sinA+10CosA=11