1
cos 255 deg = - 0.2588 <-----[ Answer ]
cos(37 deg) = 0.7986
cos(32 deg) = 0.8480 approx.
Cos(57 deg) = 0.5446 approx.
cos(75 deg) = 0.2588, approx.
cos(41 deg) = 0.7574
cos 255 deg = - 0.2588 <-----[ Answer ]
cos(51°) ~ 0.63
The exact value is an irrational number, and can't be written on paper with digits.0.34202 is less than 0.000042 percent wrong.Cos(70 deg) is an irrational number and it is impossible to give its exact value.
cos(37 deg) = 0.7986
Cos(10 deg) = 0.9848, approx.
cos(18 deg) = 0.9511, approx.
Cos(300 deg) = 0.5
cos(894 deg) = -0.9945, approx.
Angle between v and i is 90 deg so, cos 90 = 0 Same for pure capacitor
cos(32 deg) = 0.8480 approx.
Cos(57 deg) = 0.5446 approx.