Question

I need help figuring out how to solve for x on certain triangles. I can solve it easily if it has two sides or two angles already stated, but I don't know what to do if it only has one angle and one side. I'll give a couple examples in the comments.

Answer 1

X is the hypotenuse. I forgot to draw it.

Answer 2

your 3angle is 70

Answer 3

Which third angle?

Answer 4

the top one

Answer 5

Can you show how you got it?

Answer 6

yeah

Answer 7

sum of all the angles of a triangle is 180 so your one angle is given 20 and the other one is 90 as it is a rt angled triangle so the other angle is -180 -(90+20)=70

Answer 8

Oh ok. So would I use Pythagorean triples to solve for x?

Answer 9

yeah

Answer 10

but one side is x and the other is 19 but you need to have data of another side

Answer 11

How do I do that? This is so confusing. Lol

Answer 12

probably the question is incorrect wait i'm checking

Answer 13

no the question is wrong you got to have two sides

Answer 14

It can't be wrong. I got it from my homework. Lol

Answer 15

any other info

Answer 16

Here are the choices:
A. 55.6


B. 55.8


C. 6.7


D. 6.5

Answer 17

pls wait

Answer 18

nope there's surely some problem

Answer 19

I just don't think there is cuz there's other problems like this one but this one looked the simplest so I posted it.

Answer 20

ok

Answer 21

I think I found something in my book. If I mark the other unknown side as x, too, then I could do 2x squared = 19 squared and then find the square root

Answer 22

why will you mark the other side as x

Answer 23

did they tell you that they are equal

Answer 24

Hmmm..... good point lol

Answer 25

then also your answer is not coming i've calculated

Answer 26

did they tell you the area of the triangle

Answer 27

No, that's all it said besides the fact that it's not drawn to scale.

Answer 28

And to round to the nearest 10th

Answer 29

yeah theres something wrong wait i'm asking a frnd of mine

Answer 30

@saseal

Answer 31

this has got to do with inverse sine function

Answer 32

Can you explain it, please?

Answer 33

\[\sin^{-1} (\frac{ 19 }{ x } = 20^{o}\]

Answer 34

hey i got it

Answer 35

its 55.8

Answer 36

you can try the options since its mcq

Answer 37

yeah

Answer 38

will you explain it to her

Answer 39

ok