Was ist der genaue Wert von Cos 135 ?
Antworten:
cos 135° = -1/sqrt2
Erläuterung:
cos 135° = cos (45° + 90°) = - cos 45° = - 1/(sqrt2)
or
cos 135° = cos (180°-45°) = - cos 45° = - 1/(sqrt2)
cos 135° = -1/sqrt2
cos 135° = cos (45° + 90°) = - cos 45° = - 1/(sqrt2)
or
cos 135° = cos (180°-45°) = - cos 45° = - 1/(sqrt2)