Question

Can someone show me how to do this? I have no clue.

Question: What is the value of b in this diagram?
Diagram: http://prntscr.com/6tvdj6

Answer 1

@khalilforthewin

Answer 2

@Anon101

Answer 3

@HELPMEPLZ!!

Answer 4

Use sinus or cosine rule

Answer 5

Read this http://www.cimt.plymouth.ac.uk/projects/mepres/step-up/sect4/index.htm

After reading that, you are supposed to try it by yourself

Answer 6

I've had no luck learning this.

Answer 7

are you sure?

Answer 8

Ok let me help you . .

Answer 9

100% positive. I'm completely ignorant to this.

Answer 10

Using sine rule:

\[\frac{ a }{ \sin(A) }=\frac{ b }{ \sin(B) }\]
\[\frac{ 12 }{ \sin(113.17) }=\frac{ b }{ \sin(37.81) }\]

Answer 11

I got that far on my own so far, but after, nay.

Answer 12

what result did you get?

Answer 13

10.2

Answer 14

have you tried using cosine rule?

Answer 15

Nay

Answer 16

9?

Answer 17

\[b^2=a^2+c^2-2{ac} \cos(B)\]
\[b^2=12^2+6.33^2-2(12)(6.33)\cos(37.81)\]

Answer 18

what?

Answer 19

that is cosine rule

Answer 20

Alright, and is it 8?

Answer 21

yes

Answer 22

the answer is 8

Answer 23

by using either sine or cosine rule, the answer is 8

Answer 24

Are you here @Dovahnow ?