2) AA1=AB*sin30 =8/2 =4
BA1=AB*cos30 =8*√3/2 =4√3
3) x= a/cosA, y= a*tgA
4) AA1= √(17^2 -15^2) =8
△ACA1 египетский треугольник (3:4:5), множитель 2
CA1=6
5) AA1=AB*sin60 =12*√3/2 =6√3
AC=√(AA1^2 +CA1^2) =6√3(√(1+2)) =18
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2) AA1=AB*sin30 =8/2 =4
BA1=AB*cos30 =8*√3/2 =4√3
3) x= a/cosA, y= a*tgA
4) AA1= √(17^2 -15^2) =8
△ACA1 египетский треугольник (3:4:5), множитель 2
CA1=6
5) AA1=AB*sin60 =12*√3/2 =6√3
AC=√(AA1^2 +CA1^2) =6√3(√(1+2)) =18