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kennedav000
Group Title
So, on my right triangle triangle I have here, they give all the sides and are asking for an angle
The sides are
Opp=15
Adj=8
Hyp=17
And we are looking for the x angle.
 2 years ago
 2 years ago
kennedav000 Group Title
So, on my right triangle triangle I have here, they give all the sides and are asking for an angle The sides are Opp=15 Adj=8 Hyp=17 And we are looking for the x angle.
 2 years ago
 2 years ago

This Question is Closed

geoffb Group TitleBest ResponseYou've already chosen the best response.1
Do you know SOHCAHTOA? Your sine, cosine, and tangent laws?
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
Okay, since you know all three side lengths, you can use any of the three functions to determine x.
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
For example, \(\sin x = \frac{\text{opp}}{\text{hyp}}\)
 2 years ago

kennedav000 Group TitleBest ResponseYou've already chosen the best response.0
And that is it? Just use 17 over 15 ,divide and my answer would be 1.13?
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
It's not x = 1.13. It's sin x = 1.13.
 2 years ago

kennedav000 Group TitleBest ResponseYou've already chosen the best response.0
Ah, sorry for not using correct mathematical vocabulary.
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
No, that's not my point. The point is, you need to solve for x. Right now, you only know sin x.
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
You need to get rid of the sin.
 2 years ago

kennedav000 Group TitleBest ResponseYou've already chosen the best response.0
Oh? How is this done?
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
One thing first. It's not 17/15, it's 15/17.
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
So, \(\sin x = \frac{15}{17} = 0.882\)
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
To get rid of the sin, you calculate \(\sin^{1}\). On your calculator, you should have a way to do this.
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
So, \(x = \sin^{1} (\frac{15}{17})\)
 2 years ago

kennedav000 Group TitleBest ResponseYou've already chosen the best response.0
I did not know there was such an option? Thank you.
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
You might need to hit something like 2nd function, or inverse, then hit sin.
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
You should end up with something around 60 degrees, if it's sine of 15/17.
 2 years ago

kennedav000 Group TitleBest ResponseYou've already chosen the best response.0
This isn't my outcome, I get a decimal of 1.001
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
Okay, so you took your amount (0.882) and hit inverse sine (sin^1) and got 1.001?
 2 years ago

kennedav000 Group TitleBest ResponseYou've already chosen the best response.0
Oh but wait, that is sin(h), Sorry, personal mistake.
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
Since you knew all the sides, you could have also done \(x = \cos^{1} (\frac{8}{17})\) or \(x = \tan^{1} (\frac{15}{8})\), and gotten identical answers.
 2 years ago

kennedav000 Group TitleBest ResponseYou've already chosen the best response.0
Odd, I get the decimal of 0.795, how does this lead to 60 degrees?
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
What calculation gives you 0.795?
 2 years ago

kennedav000 Group TitleBest ResponseYou've already chosen the best response.0
Well, seeing as I'm using the computer based calculator, this may have swayed my calculation. When typed in, it shows up as *asinh(15 /17)*
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
Where did you type that in?
 2 years ago

kennedav000 Group TitleBest ResponseYou've already chosen the best response.0
But lo, I have found my answer as you have predicted, thank you so much kind sir, It was simply a typing error.
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
http://www.wolframalpha.com/input/?i=sin%5E1%280.882%29
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
Good stuff! You're very welcome. :)
 2 years ago

kennedav000 Group TitleBest ResponseYou've already chosen the best response.0
I shall be on my way! Good day to you, and thank you for your time.
 2 years ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
You too, David! Cheers!
 2 years ago
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