cot^2A (sec A - 1)/1+SinA = sec^2 A
(1-sin A/
1 + sec A)
Answers
Answer:
The harmonic method of analysis and prediction of tides initiated by Lord
Kelvin quickly established itself as necessary and invaluable in areas where the
diurnal tides were comparable in magnitude with the semidiurnal tides, and where,
also, these tidal oscillations were of the deep-water type in which there were no
oscillations associated with the product terms in the equations of motion. But when
the method was applied to tides in the waters surrounding the British Isles it was
found to be much less accurate than the results obtained from the older non-harmonic
methods. This was so even when the quarter-diurnal and sixth-diurnal tides were
included. These are the main shallow water constituents which are of importance
only when the tidal amplitude is not small compared with the mean depth of the
sea or channel. Even to this day the tides for many of the ports overseas are still
predicted by the non-harmonic methods because of the failure of the direct harmonic
method.
Step-by-step explanation: