90
The angle of approach and the reflected angle is always the same.
You should point it at a 40 degree angle.
the denominator of the formula includes cosine of angle of refraction. If angle of refraction is 90 degrees then the denominator becomes zero and the lateral shift becomes infinity. Now the Question is when will the angle of refraction be 90 degrees? When light travels from denser medium to rarer medium, incidence is at critical angle then your question is possible. Now, the above argument is for the lateral shift that cannot be determined. When the angle of incidence is at 900, then the numerator becomes 'cos r' which is equal to the denominator. Hence L = t following the formula and this is the maximum measurable lateral shift Hope this satisfies your doubt...
Since the angle of incidence is 0, there is no chance of refraction and so the angle of refraction too becomes 0.
The angle between 2 vectors can have any value.
25 digrees
at a narrow angle
If the wind is at your back, you should approach the dock at a shallow angle (10°-20°), then stop the boat and allow the wind to drift the boat into the dock.
Approach at a steep angle (30-45°) and swing the boat quickly.
Approach at a steep angle (30-45°) and swing the boat quickly.
The 2006 Nissan Armada has a 27.2 degrees angle of approach.
The 2008 Cadillac Escalade has a 17 degrees angle of approach.
The 2005 Honda Pilot has a 28.5 degrees angle of approach.
The 2010 Ford Expedition has a 22.8 degrees angle of approach.
The 2003 Toyota Sequoia has a 27 degrees angle of approach.
The 2005 Ford Escape has a 28.5 degrees angle of approach.
The 2012 BMW X5 has a 24.5 degrees angle of approach.