sin750 = sin (720 + 30) = sin 30 = 0,5
ctg390 = ctg(360 + 30) = ctg 30= 1,7321
sin750+ctg390 = 2,2321
sin750° + ctg390° = sin(2*360° + 30°) + ctg(2*180° + 30°) = sin30° + ctg30° = ½ + √3
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sin750 = sin (720 + 30) = sin 30 = 0,5
ctg390 = ctg(360 + 30) = ctg 30= 1,7321
sin750+ctg390 = 2,2321
sin750° + ctg390° = sin(2*360° + 30°) + ctg(2*180° + 30°) = sin30° + ctg30° = ½ + √3