A quadrantal angle is one that in 0 degrees, 90 degrees, 180 degrees, 270 degrees or 360 degrees (the last one being the same as 0 degrees). These are the angles formed by the coordinate axes with the positive direction of the x-axis. All other angles (in the range 0 to 360 degrees) are non-quadrantal
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A non-quadrantal angle is an angle that is not a multiple of 90 degrees. In other words, it is an angle that falls between 0 and 360 degrees but is not exactly 0, 90, 180, or 270 degrees. Non-quadrantal angles are commonly measured in degrees, radians, or gradients, depending on the context. Understanding non-quadrantal angles is essential in trigonometry and other branches of mathematics where angles play a crucial role in calculations and problem-solving.
sin 0=13/85
It is a trigonometric equation for a right triangle, to find a non-right-angle angle. Using SOHCAHTOA, it is the opposite side divided by the adjacent angle
In a right triangle, the sine of an (non right angle) angle would the ratio of the opposite side (opposite to the angle selected) and the hypotenuse
Well, honey, a non-example of a congruent angle would be two angles that are different in measure and don't have the same degree of sass. So, if you have one angle throwing shade at 30 degrees and another angle serving looks at 45 degrees, those two are definitely not congruent. Just like mixing stripes with polka dots, it's a fashion faux pas in the world of geometry.
(1) third angle, (2) included