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hksmrchan · 05-22-2008, 01:05 AM

Ok, So there's a right triangle,

angle of it is 64 degrees
Adjacent leg is X
opposite leg is Y
Hypotunuse is 18

Can anyone help me solve this?

Rendascus · 05-22-2008, 01:10 AM

The only thing I remember is a2+b2=c2

So just uhm....find the square root of that
and yeah. i don't remember anything else

Mr. First Name Basis · 05-22-2008, 01:13 AM

I hope you've been taught this accronym.

SOH CAH TOA

Sine - Opposite over Hypotenuse
Cosine - Adjacent over Hypotenuse
Tangent - Opposite over Adjacent

Excess Information:And to tell the truth, well you could set this up as a proportion because each angle corresponds with it's opposite side. Anyways...

Sin64 = opposite leg/18
So 18sin64 = opposite leg

If you can't figure it out from there, may God help you.

Spirit · 05-22-2008, 01:14 AM

the Sq root of the hypotenuse is 4.242 if that helps

hobosexual · 05-22-2008, 01:14 AM

Quote:

Originally Posted by Rendascus

The only thing I remember is a2+b2=c2

So just uhm....find the square root of that
and yeah. i don't remember anything else

The problem with that is he doesn't have a OR b, just c. So that won't work.

I wish I could be more helpful, I was really good at math last year, Almost made a 100 in Algebra II. But our math class is so damn laid back this year I feel like I have forgotten just about everything I used to know. We aren't really pressured into trying and I don't give a shit about math enough to actually take any initiative myself so I just kind of cruise by with a C now.

Useless post is useless... sorry I can't help.

Mr. First Name Basis · 05-22-2008, 01:15 AM

You guys are using trig identities, the hard way.

a^2 + b^2 = c^2

That's for losers.

SOH-CAH-TOA is where it's at.

Oh and for the above post, yes the triangle does have a and b. Each leg corresponds.

rateyes · 05-22-2008, 01:16 AM

Quote:

Originally Posted by Mr. First Name Basis

I hope you've been taught this accronym.

SOH CAH TOA

Sine - Opposite over Hypotenuse
Cosine - Adjacent over Hypotenuse
Tangent - Opposite over Adjacent

Excess Information:And to tell the truth, well you could set this up as a proportion because each angle corresponds with it's opposite side. Anyways...

Sin64 = opposite leg/18
So 18sin64 = opposite leg

If you can't figure it out from there, may God help you.

what this guy said.

Sylce · 05-22-2008, 01:19 AM

Isn't this cosine law because he has all 3 angles.

See, 90+64-180= 26

So thats the other side.

And with 3 angles you do cosine, or sine law. I forgot which one.

Doesn't matter.. it's easy from there.

If you STILL can't figure it out from there that's sad, and I guess I'll just answer it for you...

Actually I drew it, and it looks like you can do simple sohcahtoa....

Seventeen · 05-22-2008, 01:20 AM

Can you use the trigonometry table with the sin cos and tg values?
If you can it's easy...
All you need to do is sin64 = y/hipotenuse
It is 0,898794 = y/18
y = 0,898794 x 18
y = 16,178292

And to find x you just do cos64 = x/hipotenuse
0,438371 = x/18
x = 0,438371 x 18
x = 7,890678

If you can't use the trigonometry table then I have to think more...

Hope I helped you...
(:

Post above...
To do a cosine law you usually need 2 sides and 1 angle..
But it's not neccessary at all..
It's a triangle with a 90 degrees angle...

hobosexual · 05-22-2008, 01:20 AM

Quote:

Originally Posted by Mr. First Name Basis

You guys are using trig identities, the hard way.

a^2 + b^2 = c^2

That's for losers.

SOH-CAH-TOA is where it's at.

Oh and for the above post, yes the triangle does have a and b. Each leg corresponds.

He doesn't have the values for a and b though.

05-22-2008, 01:05 AM	#1 (permalink)
hksmrchan Banned Join Date: May 2006 Location: wtf? Posts: 4,359 Reputation: 19	Triginomotry problem please. (really easy one) Ok, So there's a right triangle, angle of it is 64 degrees Adjacent leg is X opposite leg is Y Hypotunuse is 18 Can anyone help me solve this?

05-22-2008, 01:13 AM	#3 (permalink)
Mr. First Name Basis Lothia's Lurker Join Date: Aug 2006 Location: The Distant Future Number of Victims: Countless Infractions: 4/9 (6) Posts: 3,787 Reputation: 71	I hope you've been taught this accronym. SOH CAH TOA Sine - Opposite over Hypotenuse Cosine - Adjacent over Hypotenuse Tangent - Opposite over Adjacent Excess Information:And to tell the truth, well you could set this up as a proportion because each angle corresponds with it's opposite side. Anyways... Sin64 = opposite leg/18 So 18sin64 = opposite leg If you can't figure it out from there, may God help you. __________________

05-22-2008, 01:14 AM	#4 (permalink)
Spirit Str1der's Stooge Join Date: May 2006 Location: Lynnwood, WA Posts: 3,232 Reputation: 20	the Sq root of the hypotenuse is 4.242 if that helps __________________ Steam - winception WoW Malfurion US Horde

05-22-2008, 01:15 AM	#6 (permalink)
Mr. First Name Basis Lothia's Lurker Join Date: Aug 2006 Location: The Distant Future Number of Victims: Countless Infractions: 4/9 (6) Posts: 3,787 Reputation: 71	You guys are using trig identities, the hard way. a^2 + b^2 = c^2 That's for losers. SOH-CAH-TOA is where it's at. Oh and for the above post, yes the triangle does have a and b. Each leg corresponds. __________________

05-22-2008, 01:19 AM	#8 (permalink)
Sylce Banned Join Date: Mar 2008 Posts: 1,719 Reputation: 36	Isn't this cosine law because he has all 3 angles. See, 90+64-180= 26 So thats the other side. And with 3 angles you do cosine, or sine law. I forgot which one. Doesn't matter.. it's easy from there. If you STILL can't figure it out from there that's sad, and I guess I'll just answer it for you... Actually I drew it, and it looks like you can do simple sohcahtoa.... Last edited by Sylce; 05-22-2008 at 01:21 AM.

05-22-2008, 01:10 AM	#2 (permalink)
Rendascus Banned Join Date: Jun 2007 Location: Behind you Posts: 2,741 Reputation: 9	The only thing I remember is a2+b2=c2 So just uhm....find the square root of that and yeah. i don't remember anything else

05-22-2008, 01:20 AM	#9 (permalink)
Seventeen Master Chief's Windex Join Date: Apr 2008 Location: Nictheroy Posts: 95 Reputation: 10	Can you use the trigonometry table with the sin cos and tg values? If you can it's easy... All you need to do is sin64 = y/hipotenuse It is 0,898794 = y/18 y = 0,898794 x 18 y = 16,178292 And to find x you just do cos64 = x/hipotenuse 0,438371 = x/18 x = 0,438371 x 18 x = 7,890678 If you can't use the trigonometry table then I have to think more... Hope I helped you... (: Post above... To do a cosine law you usually need 2 sides and 1 angle.. But it's not neccessary at all.. It's a triangle with a 90 degrees angle... __________________ costello music. Last edited by Seventeen; 05-22-2008 at 01:25 AM.

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