Question

关于勾股定理：在直角三角形ABC中,角C=90度,角A,角B,角C的对应边为a,b,c.

Answer 1

1.角C=90度,a:b=3:4

根据勾股定理,c^2=a^2+b^2,所以c:a:b=5:3:4

c=75cm,a=45cm,b=60cm

2.c-a=4,b=16

c^2=a^2+b^2

c^2=(c-4)^2+16^2

c=34,a=34-4=30