30
That depends upon what you are given - the equation of the line, the coordinates of 2 points on the line, etc.
No, if the mirror is flat (a plane), the angle of incidence always equals the angle of reflection.
Fifteen degrees from the horizontal.
A true bearing is a type of bearing that indicates the direction of one point relative to another point on the Earth's surface, measured using true north as a reference point. It is expressed as an angle, measured in degrees, between a fixed reference direction (such as true north) and the direction of the point being observed. True bearings are important for navigation, surveying, and other applications that require accurate direction-finding. They differ from magnetic bearings, which are measured relative to the Earth's magnetic field, and are subject to variation depending on the location and time. True bearings are more reliable and consistent, as they are based on the Earth's axis of rotation and do not change over time or location.
azimuth
A vertical angle runs up and down or from top to bottom or vise versa. A horizontal angle runs from left to right or vice versa.
horizontal lines are lines which may be at the angle of 00,1800,3600.if vertical lines stand on horizontal lines it is in the angle of 900
horizontal?
Diagonal means a line that is not vertical or horizontal, but in between. i.e. / or \
A horizontal angle is an angle between lines on a horizontal plane.
Diagonal means across at an angle, not horizontal or vertical.
the special type of theodolite used to measure horizontal and vertical distance and horizontal angle.
A line that is at right angles to a vertical line is said to be horizontal.
A vertical angle is perpendicular to a horizontal base and equals 90 degrees
Disc angle has main two angle : 1. Vertical angle 2. Horizontal angle
Diagonal means across at an angle, not horizontal or vertical.
The angle between the incident ray and the mirror is equal to the angle between the reflected ray and the mirror.