Mathematics
Specific right-angled triangles (the 45∘45^\circ45∘-45∘45^\circ45∘-90∘90^\circ90∘ and the 30∘30^\circ30∘-60∘60^\circ60∘-90∘90^\circ90∘) used to geometrically derive exact trigonometric ratios.
Exact Trigonometric Values
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