0,05*0,02=0,001
вроде это правило умножения вероятностей...)
2y+6,1=7,9
2y=1,8
2y=0,9
(y+7,3):7=1,4
y+7,3=1,4*7
y+7,3=9,8
y=9,8-7,3
y=2,5
<span>а)360°=2*180</span>°=2π<span>;
180°=</span>π<span>;
90°=90</span>°*π/180=π/2<span>;
270°=270*</span>π/180=3π/2<span>;
0°=0
б)45°=45</span>°*π/180=π/4<span>;
135°=135*</span>π/180=3π/4<span>;
225°=225*</span>π/180=5π/4<span>;
315°=315*</span>π/180=7π/4<span>;
в)60°=60*</span>π/180=π/3<span>;
120°=120*</span>π/180=2π/3<span>;
240°=240*</span>π/180=4π/3<span>;
300°=300</span>π/180=5π/3<span>;
г)30°=30*</span>π/180=π/6<span>;
150°=150*</span>π/180=5π/6<span>;
210°=210*</span>π/180=7π/6<span>;
330°=330*</span>π/180=11π/6<span>;
д)-45°=-45*</span>π/180=-π/4<span>;
-90°=-90*</span>π/180=-π/2<span>;
-135°=-135*</span>π/180=-3π/4<span>;
-180°=-</span>π<span>;
е)-270°=-270*</span>π/180=3π/2<span>;
-360°=2*180=2</span>π<span>;
-1800°=1800*</span>π/180=10π
Я в свободное от учебы время сижу в интернете.