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OpenStudy (anonymous):
Which of the following is the basis of the proof that sin2 x + cos2 x = 1? A trigonometric identity, which states that tan x = (sin x/cos x) B Law of Sines and Law of Cosines C equation of a circle with (0, 0) as its center and radius = 1 D definition of the tangent ratio
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OpenStudy (anonymous):
@AccessDenied
OpenStudy (anonymous):
@satellite73
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