Question

Can someone help me. Please

Answer 1

Step-by-step explanation:

a. the angle B in triangle ABC:

180-47=133°

angle C in ABC:

180-(40+133)=7°

using sine rule:

a/sin A= b/sin B= c/sin C

50/sin 7= BC/sin 40

BC= (50*sin40)/ sin7

=263.7 m

b.sin 47= opposite/hypotenuse

sin 47= CD/263.7

CD= sin 47*263.7

= 192.9