Trigonometry help please

[Spiderrific]

So I am trying to solve this trig equation and I am stuck on it.

So the triangle's degree is 39.
The sine is .6293
The cosine is .7771
The tan is .8097

The hypotenuse is 30
The opposite side is 18.88

I am trying to find out what the adjacent side is and I'm struggling to figure it out.
Any help would be appreciated.
Thank you.

[Mooby the Golden Sock]

If it is a right triangle, you can simply use the Pythagorean Theorem to find the missing side, correct?

Or you could use your identities for cosine and tangent to figure it out.

[Spiderrific]

I suppose I can try using the Pythagorean theorem.

[chainmailleman]

All I really have is one side and one angle. I need at least one more angle or side to figure your problem out. Unless you did tell me but you worded your problem in a way I find confusing.

[Spiderrific]

I already solved this problem.

[CuAnnan]

chainmailleman

All I really have is one side and one angle. I need at least one more angle or side to figure your problem out. Unless you did tell me but you worded your problem in a way I find confusing.

The sine tells us that the angle is a right angled triangle.
Therefore you can apply Pythagoras' right angle triangle rule.

[Spiderrific]

Mooby the Golden Sock

If it is a right triangle, you can simply use the Pythagorean Theorem to find the missing side, correct?

Or you could use your identities for cosine and tangent to figure it out.

I used the Pythagorean Theorem and it worked. Thanks for the help!