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.
An angle is said to be in a certain quadrant if, when the angle is in standard position, the terminal side lies in that quadrant. For instance, a 65Â° angle lies in quadrant I or simply that it is a quadrant I angle. As Figure 2b shows, an angle of â187Â° is a quadrant II angle. If the terminal side of an angle in standard position lies along either the x axis or the y axis, then the angle is called quadrantal. For example, â360Â°, â270Â°, â180Â°, â90Â°, 0Â°, 90Â°, 180Â°, 270Â°, 360Â° are quadrantal angles. Evidently, an angle is quadrantal if and only if its measure is an integer multiple of 90Â° ( or 2 Ï radians). Figure 2.1 Figure 2.2 (a) quadrant I angle (b) quadrant II angle initial side