Question

Find the length of BC Round to the nearest hundredth.

A.
0.02 m
B.
6.04 m
C.
8.12 m
D.
51.00 m

Answer 1

The answer is B i just did it and teacher helped me

Answer 2

`a=6\ m`

Explanation:

Here,

`m\angle A=18^(\circ)\\\\m\angle C=21^(\circ)\\\\AB=c=7\ m\\\\BC=a=??`

Sine law-

`(\sin A)/(a)=(\sin B)/(b)=(\sin C)/(c)`

Putting the values,

`\Rightarrow (\sin 18)/(a)=(\sin 21)/(7)`

`\Rightarrow a=(\sin 18* 7)/(\sin 21)`

`\Rightarrow a=6\ m`