а)360°=2*180°=2π;
180°=π;
90°=90°*π/180=π/2;
270°=270*π/180=3π/2;
0°=0
б)45°=45°*π/180=π/4;
135°=135*π/180=3π/4;
225°=225*π/180=5π/4;
315°=315*π/180=7π/4;
в)60°=60*π/180=π/3;
120°=120*π/180=2π/3;
240°=240*π/180=4π/3;
300°=300π/180=5π/3;
г)30°=30*π/180=π/6;
150°=150*π/180=5π/6;
210°=210*π/180=7π/6;
330°=330*π/180=11π/6;
д)-45°=-45*π/180=-π/4;
-90°=-90*π/180=-π/2;
-135°=-135*π/180=-3π/4;
-180°=-π;
е)-270°=-270*π/180=3π/2;
-360°=2*180=2π;
-1800°=1800*π/180=10π