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5927012 No.5927012 [Reply] [Original]

quick question, given the cosine of an angle, how can i get the two possible angles that fit it?

sin(45) = 0.7071 = [45,135]
sin(135) = 0.7071 = [45,135]

>> No.5927020

convert using arccosine, +-90 or +-pi/2

let's see if I still know my basic geometry

>> No.5927023

>>5927020
ah, sweet as i got it. cheers.