a) tg−π/3-π/3−π/3 = tan−60°-60°−60° = -√3
b) ctg−π/6-π/6−π/6 = cot−30°-30°−30° = -√3/3
c) sin405°405°405° + cos−45°-45°−45° = sin45°45°45° + cos45°45°45° = √2/2 + √2/2 = √2
a) tg−π/3-π/3−π/3 = tan−60°-60°−60° = -√3
b) ctg−π/6-π/6−π/6 = cot−30°-30°−30° = -√3/3
c) sin405°405°405° + cos−45°-45°−45° = sin45°45°45° + cos45°45°45° = √2/2 + √2/2 = √2