Why are there two sine ratios, two cosine rations, and two tangent ratios for any right triangle?

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asked Sep 8, 2016 221k views

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Ayush Mishra · Answer 1 · 2016-09-12T23:58:12+0000

You could take it from either of the non-right angles.
To one angle, which side is opposite and which is adjacent is different than to the other angle. This is also why sin(x) = cos(90-x) and cos(x) = sin(90-x).

Why are there two sine ratios, two cosine rations, and two tangent ratios for any right triangle?

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