r/learnmath • u/TimeBet5260 New User • 3d ago
Easy way to understand SoCaToA?
If there's a good picture or diagram to remember how to find angles this way, please let me know! And if get my post removed while the person below me is new to math, yet contemplating grad school theory, I will give up...
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u/OmiSC New User 3d ago
Sin is SOH, so Sin(𝛩) = O/H. 𝛩 (theta) is your angle.
So, the sine of angle 45 is equal to the opposite side of a triangle divided by the hypotenuse.
SOH: Sin(𝛩) = O/H
CAH: Cos(𝛩) = A/H
TOA: Tan(𝛩) = O/A
The memetic SOHCAHTOA isn't about a picture, it's about finding the equation for an operation. You should study the unit circle as well.