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)#