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tg 420 stopni = tg (360° + 60°) = tg 60° = √3
sin 240 stopni = sin(180° + 60°) = - sin 60°= - √3/2
ctg 300 stopni = ctg (360° - 60°) = - ctg 60° = - √3/3
cos 210 stopni = cos( 180° +30°) = - cos 30° = - √3/2
tg 225 stopni = tg ( 180° + 45°) = tg 45° = 1
sin 420 stopni = sin(360° + 60°) = sin 60° = √3/2
ctg 135 stopni = ctg (180°- 45°) = - ctg 45°= - 1
cos 300 stopni = cos ( 360° - 60°) = cos 60° = 1/2