Question

Solve for x.

Answer 1

A. 10.83
B. 22.54
C. 29.91
D. 34.38
I think it is D, but I am only guessing.

Answer 2

Do you know Law of Sines?

Answer 3

Yeah but that's used in the chapter after this one. Like, I know it, but I'm not *supposed* to use it as part of my work for this chapter, for some odd reason.

Answer 4

So you can't use it?

Answer 5

No. It can't be part of my work, which I have to show.

Answer 6

So do you know x is the hypotenuse?

Answer 7

What? As in, x is my hypotenuse? Yes, I know that.

Answer 8

Do you know soh coa toa?

Answer 9

Yeah

Answer 10

Can you use it to solve for x?

Answer 11

I know I can... I'm just having a hard time seeing it.

Answer 12

Use SOH

Answer 13

Alright, I sound dumb, but... \[\theta=\sin 18/x\] ?

Answer 14

no it is: sin(angle) = opposite side / hypotenuse

Answer 15

sin(37degrees) = 18/x? (37 was the given angle)

Answer 16

yep

Answer 17

you can use CAH as well try it

Answer 18

Oh so 29.91

Answer 19

Except, I did that by plugging the answer choices in for x. I don't actually know how to do it.
sin37 = 0.602
and then I just divided 18 by answer choices until I got it. I know that's not the "right" way

Answer 20

you can multiply the x over so sin(37)x = 18
then divide by sin(37) from both sides to get x = 18/sin(37)

Answer 21

Oh right! Thanks!

Answer 22

your welcome