Question

How do i Do this?http://prntscr.com/3gb8ma

Answer 1

Not clear what the question is ,

but for general triangles, Law of Sines is
a/sinA = b/sinB =c/sinC

and Law of Cosines
c^2 = a^2 + b^2 - 2 a b cos C

one or both should help

Answer 2

which should i use

Answer 3

I am distracted now. Play around with this a bit.

Answer 4

ummm ok...

Answer 5

can you use this as an example i hve 7 more problems and i hve no idea how to do it?

Answer 6

Looks like Law of Sines will work.
Do thse one triangle at a time to get the unknown side length.

Answer 7

im doing the left triangle first so sin30/6 = Sin C/10 is this correct?

Answer 8

@satellite73

Answer 9

6/sin 30 = 10 / sin w

the get s from the fact that s + w + 30 = 180

Answer 10

6/sin 30= 12

Answer 11

and then 10 divided by what

Answer 12

get z from w+z = 180 for straight line
get v from law of sines and 6/sin v
get t from t=z+v = 180
get x from law of sines for x / sin t

Answer 13

get t from t+z+v = 180

I don't see a "12" in the picture

Answer 14

i put it in my calculator

Answer 15

how do i get w. 180-30 is 120?

Answer 16

6/sin30 = 10 / sin w

so sin w = 10 sin 30 / 6 = 10(0.5)/6 = .833
w = arc sin (.833) = 56.4 o

Answer 17

z= 93.6

Answer 18

z = 180 - 56.4 = 123.6
a straight line through a point is a 180 degree angle.

Answer 19

wow ok, so to get t i have to find v and to get v

Answer 20

that's the idea, step by step, going from one to the next.

Answer 21

yes but im missing someething to get v i have to know T, how do I get T?

Answer 22

oh s=20 and t=100 because A=30, and 30+20+100=180?

Answer 23

i mean wait

Answer 24

s= 50?

Answer 25

w = 56.4 from law of sines above
30 + w + s = 180 because angles in triangle sum to 180 o
30 + 56.4 + s = 180
s=?

Answer 26

How are you doing?

Answer 27

im trying to find V

Answer 28

v= 34

Answer 29

or 60

Answer 30

@douglaswinslowcooper

Answer 31

6/sin z = 6/ sin v

you have z so sin z = sin(93.6) = 0.998

and v = z =93.6

Perhaps I've made a mistake, or the drawing is misleading, but z looks smaller than 90o
though I have calculated it to be larger. We know I'm wrong because z+ v > 180.
Sorry.

6/sin 30 = 10/sin w
sin w = (10/6) sin (30) = 0.833
arc sin(0.833) = 56.4 which is too small an angle. Right now, I am puzzled.

Answer 32

10/sin w = 6 / sin 30
sin w = (10/6) sin 30 = 0.833
w = 56.4 over and over again,
But this makes 180 = w + z = 56.4 + z and z = 180 -56.4 etc. and z=v means z cannot be this big. I am sorry to have led yu astray.

You might try strting from the right-side triangle, where z = v

Answer 33

The problem seems straightforward, but I am making some mistake I cannot identify. Good night.

Answer 34

Here's a link for Law of Sines. I cannot see my error.

http://www.mathwarehouse.com/trigonometry/law-of-sines/formula-and-practice-problems.php

Answer 35

Trying again. Perhaps the problem is that w>90 o.
Start with v. Same law of sines give v=56.4.
z = v because they subtend equal sides so v = 56.4
w+z= 180 because they split a straight line so w = 123.6
Sine w = sine (123.6) = 0.833 = sine (56.4), so there is our problem, sine has same value for these two angles, which are the same angular distance from 90 o.

Get s, get t from sum of angles in triangle = 180 o.
get x and y from law of sines again. Good luck..