179.99 degrees
The measure of the angle is the number of degrees in this case.
Sin(285) is a number, not an angle. The reference angle for 285 degrees is 285-360 = -75 degrees.
An angle can have up to 180 degree's. A circle can have up to 360 degrees. An angle with 180 degrees is a straight line. If you went any farther than it would change into a 179 degree angle, and so on.
Conruent angle
The greatest number of degrees in any triangle are 180o
179 degrees
An obtuse angle is greater than 90 degrees and less than 180 degrees
A supplementary angle is a 180-degree angle minus the number of degrees in the given angle.
179.99 degrees
The answer depends on the angle.
90 degrees
In a right triangle the greatest angle is 90 degrees.
An acute angle is greater than 0 but less than 90 degrees So its greatest angle is anything below 90 degrees, but not including 90 degrees.
89 plus any fraction you might care to add. 90 is a right angle and greater than 90 would be obtuse.
It is a measure of the size of the angle.
Because is the greatest opening angle you can get in a circle.