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Why is it 1
Because it’s a unit circle.
for the same reason that rulers start with 1, it would be utterly pointless to use anything else.
Your ruler starts with 1? How do you measure stuff between 0 and 1?
those are unlabeled, have you ever seen a ruler?
Why?
SOH CAH TOA
Ah, sohcahtoa. Not to be confused with
I’m pretty dumb, so I don’t understand this one.
Probably that trigonometry is the highest math the average person will take?
I got to calculus 2 and proceeded to forget everything through algebra II once I took a break from math for a semester.