Need help solving this problem An AC voltage is expressed as 240 cos(2765t - 45°)?

wavelength

average voltage(full cycle)

period

frequency (in Hz

phase shift

phase angle

angular velocity

Wavelength = 681663.26 m

Average voltage (full cycle) = 0.0 v

Period = 0.00227sec

Frequency Hz = 440.1 Hz

Phase shift = (not clear, shift in time, distance, or
voltage?) 

Phase angle = -45.0 degrees

Angular velocity = 2765 radians/sec