Question

Find the value of y.

Answer 1

your full question....?

Answer 2

yah gimme a sec, im getting the figure

Answer 3

okies

Answer 4

Lawof sinesproblem :P

Answer 5

Do you know the equation for law of sines at all?

Answer 6

no

Answer 7

kinda, but i dont remember it

Answer 8

\[\frac{ a}{ sinA } = \frac{ b}{ sinB } = \frac{ c }{ sinC }\]

Answer 9

oh yah!! this one is a bit more complicated doe :/

Answer 10

It's not that bad. Well, in order to do this you need to be able to have both a small and capital letter so you can have complete knowledge of one of the fractions. So which variable do we have both the lowercase and uppercase values of?

Answer 11

we have both x and y

Answer 12

Well, only x do we have both values of. We have angle Y, but not side y. But either way, those are the 4 values we can use, plugging them into the equation:

\[\frac{ 52 }{ \sin52 } = \frac{ y }{ \sin72 }\]

Answer 13

ok so do we cross multiply?

Answer 14

yep :3

Answer 15

and then what?

Answer 16

What did you come up with?

Answer 17

49.45=y*52

Answer 18

Looks like you cross-multiplied incorrectly. In fact, you don't even need to fully cross multiply.

\[\frac{ 52 }{ \sin94 } = \frac{ y }{ \sin72 }\]
\[\frac{ (52)(\sin72) }{ \sin94 } = y\]

Answer 19

49.57...?

Answer 20

49.6

Answer 21

Correct. Looks like thats all ya needed.

Answer 22

thanks man. always a life saver

Answer 23

Glad to help.

Answer 24

hey, how do i solve this?
70/sin(88) = z/sin(39) = x/53

Answer 25

Im guessing that should be sin53. But you use 70/sin(88) for both fractions.

Answer 26

\[\frac{ 70 }{ \sin88 } = \frac{ z }{ \sin39 }\]
\[\frac{ 70 }{ \sin88 } = \frac{ x }{ \sin53 }\]

Answer 27

error O.o

Answer 28

? error?

Answer 29

No idea, haha

Answer 30

urs or mine?

Answer 31

But yeah, you solve for z in 70/sin(88) = z/sin(39) first. Once you do, do the same thing with the other fraction. You would do
70/sin(88) = x/sin(53)

And it was showing as error on my end, no idea about yours.

Answer 32

could you put that in perspective for me? like, the equation thing?

Answer 33

I tried and it was giving me an error. Ill try again.

Answer 34

Yeah, ill have to draw it.