1/2 - sin30, 1 - tan45, √3/2 - cos30, sin⍬/cos⍬ - tan⍬, 2 - cosec30, Not defined - tan90, 2/√3 - sec30, 0 - cos90, 1/√2 - sin45, √2 - cosec45, cos⍬/sin⍬ - cot⍬, Right triangles - Trigonometry, 90 - right angle, Longest side - Hypotenuse, 45 - sin⍬ = cos⍬,

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