trig question  help me find X
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I am trying to draw out the bolt pattern of a 6 on 5.5 wheel spacer.. and my limited CAD ability has revealed a very rusty trig ability. When I was 16 I could have done this on a napkin in about 2 minutes... but tonight I find myself scratching my head.. :o
Can someone solve this? 306090 triangle, the long leg that's not the hypotenuse is 2.25, aka the radius of the 5.5" circle. I need to know how far "up" or down, or sideways to draw, so that I can draw in the hypotenuse then create a lug hole where that intersects the circle. Here's a chance to prove how smart you is.. what's X? :confused: 
1 * √2.25 ? I need to find the trig and geometry symbols but i think you will know what i'm talking about

Sure thing:
Tan 30 = x/2.250 .5773 = x/ 2.25 x= 1.299" 

An easy way to remember these trig functions is the following pnuemonic:
Chief SOH CAH TOA (pronounced Cheif soaka toea) The SOH CAH TOA part is as follows SINE = OPPOSITE over HYPOTENUSE COSINE = ADJACENT over HYPOTENUSE TANGENT = OPPOSITE over ADJACENT Where the hypotenuse is obvious, and the adjacent side is not the hypotenuse, but the other connecting side to the angle you have, and the opposite is the one not touching the angle, if that makes any sense. 
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edit: yeah I remember the SOH CAH TOA from high school, just couldn't seem to get it, and using the computer calculator probably didn't help me either. I remembered the sin of a 30 degree angle was .5, yet for some reason my answer wasn't double or half of my known value. I can't wait until Gavin learns this stuff, so I can learn it all over again. :) 
Doh.. I think i was in the ball park.. lol
can the airplane take off on that triangle Tim? 
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edit: and good one Fubuki, was hoping someone would post that one. :) 
Isaac is right but I think you are looking for a different number... since the lugs on that pattern are 60* apart it's Tan (60) = x / 2.25
so: x = 3.897 Edit: Nevermind, you two confused me. Don't look at these numbers. :D 
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but hey i drew a wheel spacer! 
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