What is the length of the missing side, x?
40 in.
740
35 in.
510
49 in.
740
55°
х

Answer:
using similarity side 35 in. is similar to side x and side 40 in. is similar to side 49 in.
so... x\35in.=49/40
x×40=49×35
40x=1715
x=1715÷40
x=49