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Q: What is the angle of measurement below a horizontal line called?

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420 feet at about an angle of -3 degrees.

It can be any object that is above or below the horizontal from the perspective of a viewer.

An angle of declination is relevant when an observer is at a higher altitude than the object being observed. It is the angle made by the line of sight with the horizontal. Suppose this is angle x. Then if the altitude of the observer is known to be h, then line-of-sight distance to the object is h*sin(x). The object is h*tan(x) from the point below the observer at the level of the object.Conversely, if the line-of-sight distance from the object to the observer or the horizontal distance to the point directly below the observer is known, it is possible to calculate the height of the observer.

The angle below horizontal that an observer must look to see an object that is lower than the observer. Note: The angle of depression is congruent to the angle of elevation (this assumes the object is close enough to the observer so that the horizontals for the observer and the object are effectively parallel; this would not be the case for an astronaut in orbit around the earth observing an object on the ground).

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Any angular measurement below 90 degrees is an acute angle. Any angular measurement below 90 degrees is an acute angle.

420 feet at about an angle of -3 degrees.

An angle that measures 87.177 degrees would be considered an acute angle. This is because its degrees measurement is below 90 degrees.

It can be any object that is above or below the horizontal from the perspective of a viewer.

Angle of depression is defined as the angle between the horizontal line and the line joining the observer's line of sight to an object below the observer's eye sight. You can be on top of a building and an object is situated on the ground, and the angle between your horizontal line and the object is the angle of depression.

An 80 degree angle is an acute angle. Any angle measurement that falls below 90 is acute while anything above is obtuse.

Those are called "runners". Rhizomes

Those are called "runners". Rhizomes

A 128 degree angle would be an "obtuse" angle. This is because the angle measurement exceeds 90 degrees. Anything below 90 degrees would be considered an "acute" angle.

an acute angle doesn't have an exact measurement, but it is lower than 90 degrees. So any angle below 90 degrees is an acute.

Draw a straight horizontal line. Draw a 29-degree angle below the line. Indicate that 331 is the rest of the space.

An angle that is 160 degrees would be an "obtuse" angle. This is because the measurement of degrees exceeds 90. Anything below 90 degrees would be an "acute" angle.

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