I am trying to figure out how you label a right triangles side Opposite, Adjancent, or Hypotenus. Every time I try to calculate a side or angle I use the wrong formula for example( Sine, Cosine, and Tangent) because I am not sure which side is which. Is there an easy way to remember this?
2006-11-17 13:45:18 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
(This works best with angles less than 90 degrees)
Imagine a circle, with it's center at (0,0)
The hypoteneuse is a radius of the circle.
The adjacent side is a line going horizontally from the center of the circle to the point below (or above) where the hypoteneuse intersects the circle.
The opposite side is a line going vertically from the point where the hypoteneuse intersects the circle down (or up) to the horizontal axis.
2006-11-17 14:08:08 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Tommy On A Ship Of His Caught A Herring. (ToaSohCah.)
Anyway, you have to remember that adjacent (i.e. touching) and opposite are respective to the angle of which you want the cosine or sine. The hypotenuse is always the long side of the right triangle.
2006-11-17 13:49:25 · answer #2 · answered by Anonymous · 0⤊ 0⤋
I never did like Soh Cah Toa.
I always memorized it as
"Cosine" sounds like "Close side" or the "Adjacent" side (over the Hypotenuse). Since "Sine" is the opposite of that, it is the Opposite side over the Hypotenuse. And "Tangent" equals Sine over Cosine, so Opposite over Adjacent.
Cos = Adj / Hyp
Sin = Opp / Hyp
Tan = Sin/Cos = Opp / Adj
2006-11-17 15:25:28 · answer #3 · answered by emilynghiem 5 · 0⤊ 0⤋
In any right triangle the side opposite the 90 degree angle is always the hypotenuse. Now focus on one of the two acute angles. Its opposite is the side which does not surround or enclose it and its adjacent is the side which does touch it and doesn't happen to be the hypotenuse. This works every time.
2006-11-17 14:07:43 · answer #4 · answered by Kathy O 1 · 0⤊ 0⤋
SOH = Sin is opposite divided by using Hypotenuse CAH = Cosine is adjacent divided by using Hypotenuse TOA = Tangent is opposite divided by using adjacent I recollect it by using "some previous Horse, caught yet another Horse, Taking Oats Away." some previous horse is SOH, caught yet another horse is CAH, and Taking oats away is TOA
2016-12-30 14:32:52 · answer #5 · answered by ? 3 · 0⤊ 0⤋
Soh --->>> Sine = opposite/hypotenuse
Cah --->>> Cosine = adjacent/hypotenuse
Toa --->>> Tangent = opposite/adjacent
2006-11-17 13:50:36 · answer #6 · answered by DenRoCK 3 · 0⤊ 0⤋
I just remember that the cosine shares a side with the angle in question. I'm sure you will sort it all out with a little practice.
http://i35.photobucket.com/albums/d194/mekaniker/fun/sohcahtoa.gif
2006-11-17 14:11:28 · answer #7 · answered by Anonymous · 0⤊ 0⤋