Oakville is a vibrant residential town located in Southern Ontario, Canada and within the Greater Toronto Area. Founded in 1857, Oakville now has an estimated population of 187,300. Oakville is known for its lively shopping districts, dynamic arts community, scenic harbors, and abundant dining options.
Quadrantal angles (0, 90, 180, and 270 degrees), and the values of the sine, cosine, and tangent of each of these angles. From the trig lessons in the Algebr... Quadrantal angles (0, 90, 180, and 270 degrees), and the values of the sine, cosine, and tangent of each of these angles. From the trig lessons in the Algebra 2 course by Derek Owens.
Since those triangles together cover 360 degrees, each triangle obviously covers 36 degrees of that total, so each triangle has one 36 degree angle. The interior angles of a triangle always add up to 180 degrees, and the other two angles are equal, so each of them is (180-36)/2 = 72 degrees. The angle between each pair of sides is two of those, or 144 degrees. Views Â· View Upvotes.