sin-1(1/20) = 3 degrees.
36 degrees
The angle would be .4 if you rounded it to the nearest 10th degree
83 degree angle
Each exterior angle of a regular octagon is 360/8 = 45 degrees
An angle whose degree measure is between 0 and 90 is an acute angle. An angle whose degree measure is between 90 and 180 is an obtuse angle. These are basic properties of geometry.
Using trigonometry the angle of elevation is 77 degrees rounded to the nearest degree
60 degrees
51 degrees
45 degrees
You can measure it. Or you can measure some other quantities (for examples, the lengths of the sides of a triangle), and calculate the angle using trigonometry.
The angle would be 82.4053 degrees, or 82.4 correct to the nearest tenth of a degree.
36 degrees
To measure an angle of elevation using a protractor, first position the protractor so that its center point aligns with the vertex of the angle you are measuring. Ensure the baseline of the protractor is level with the horizontal line from the vertex. Look up towards the point creating the angle of elevation and read the measurement on the protractor where the line of sight intersects the degree scale. This reading indicates the angle of elevation from the horizontal to the line of sight.
The angle would be .4 if you rounded it to the nearest 10th degree
23.7
67 degrees
83 degree angle