The vertical angle at which a shot is taken is another important visual signal.

And an accurate shot would be nearly impossible from that almost vertical angle.

Suddenly in the distance, he saw the crazy, vertical angle of headlights shining out onto the sand.

The vertical angle of the back light can change the effect.

An additional use of this rule-of-thumb is on final approach which generally has a 3 degree vertical angle.

It climbed to its ceiling at a nearly vertical angle.

Then the distance to the next exterior point is measured along with the vertical angle.

Forward, the submarine's nearly vertical angle in the water eased.

Out with your quadrant, then, and take a vertical angle and tell me how far off it is.

"Distance off by vertical angle" - and there was the formula.