The phrase "angles by which" is correct and usable in written English.
It can be used when discussing different perspectives or methods of viewing a situation or concept.
Example: "There are several angles by which we can analyze the problem to find a solution."
Alternatives: "perspectives through which" or "viewpoints from which".
There might also be a geometry component, in which the angles by which this will allow us to deal with our Pakistan and Al Qaeda problems are diagrammed.
Direct connection involves overlaying the subject atom of the initial structure with the iterated atom (N) of the template fragment, and finding suitable angles by which to rotate the fragment.
There are many angles by which to look at the war on drugs; one angle is that it has been a massive and successful propaganda exercise to demonize drug users.
To test this hypothesis, we extracted the angles by which the NH orientations differ in representative X-ray structures featuring type-I and type-II β-turns.
The maximum available torque is achieved when the angle by which the rotor field lags the stator field is 90°.
Adjustment to load changes involves changes in the angle by which the rotor field lags the stator field and thus involves short-term changes in instantaneous speed.
Though the oblique angle by which the waves approached the Pacific coast of the United States mitigated their force, Crescent City, Calif., saw waves of up to 5.6 feet (1.7 metres), and boats and docks in Los Angeles, San Diego, and Long Beach were damaged.
While the boffins calculated the angle by which the nose would have to droop for a safe landing, and worked out how to cool the windows so that passengers would not get burnt, politicians on both sides of the Channel were gambling.
The angle by which an object appears rotated is independent of the distance of the object behind the windows.
The phase angle the angle by which stress and strain are out of phase with each other is related to energy storage and dissipation.
The nominal yaw angle is the orientation angle by which a satellite would maintain optimal solar visibility throughout its orbit, provided it could spin arbitrarily fast.
