Question

In triangle FGH, FH=7feet FG=12feet and measurement F=70 degrees. Find measurement G round to the nearest tenth

Answer 1

@wolf1728 @Astrophysics

Answer 2

Hello !!!
I got "bumped" and I entered this topic!!!

Answer 3

yay and did I do that correctly?

Answer 4

I guess you did (and good diagram)

Answer 5

Thats what I meant *did i do the diagram correctly*

Answer 6

Yes you did!!

Answer 7

Where's Astro?

Answer 8

@Astrophysics

Answer 9

not sure

Answer 10

can you help me get it started and i do it and you tell me if im doing it wrong or not

Answer 11

you guys there?

Answer 12

Two sides and included angle, we use Law of Cosines

Answer 13

This should not be a right triangle

Answer 14

Otherwise we could just say it's 20 degrees ;)

Answer 15

b=7 c =12 Angle A=70 degrees
a^2 = (b^2 + c^2) -(2*b*c * cos(A))

Answer 16

You can use the sine law

Answer 17

So one side should be longer...i was thinking the same! but 20 isnt a answer choice!

Answer 18

That would be a whole lot easier

Answer 19

that is what wolf included correct

Answer 20

Not quite, he is using cosine law

Answer 21

But, I will let wolf continue :)

Answer 22

does it matter which one is used or?

Answer 23

a^2 = 7^2 + 12^2 -(2*7*12*cos(70)
a^2 = 49 + 144 - (108*.34202)
a^2 = 193 -36.93816
a^2 = 156.06184
a = sq root(156.06184)
a = 12.49

Answer 24

I dont think thats correct its not a choice I have maybe we have to use Cos*b*

Answer 25

hold on im looking

Answer 26

How about 11.642 ?

Answer 27

how did you get that

Answer 28

its one of the answers but I am trying to learn

Answer 29

Well lets redraw the triangle and put everything in place, and continue from there

Answer 30

Oh I guess wolf already did it xD

Answer 31

Ok I was just a little off on the graph

Answer 32

a^2 = 49 + 144 - (168*.34202)
a^2 = 193 - (57.45936)
a^2=135.54064

a = 11.6421922334

ARRGGGHHHH !!!!!!!!!!!
The other time I made an arithmetic mistake.

Answer 33

I try not to make right triangles, but always end up doing so haha, and good job wolf I believe in you! :P

Answer 34

was 11.642 an answer?

Answer 35

11.6 yes

Answer 36

all right !!!!!!!!!!!!!!!!

Answer 37

Alright cool! :)

Answer 38

Did you understand everything, sorry about the first question it was a bit messy, I'll go look at it again later...

Answer 39

wait dont go anywhere I am gonna show you the work for a problem and I just would like for you to check

Answer 40

slowly but surely I know a lot more than I did before I came here

Answer 41

all right !!

Answer 42

Okay so Im finding the area of a triangle and it looks like