review_angle

review_angle - 6 = 30 , 4 = 45 , 3 = 60 and 2 = 90 ....

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Special Angles on a Unit Circle Instructor: Ms. Hoa Nguyen (nguyen@scs.fsu.edu) Special angles between 0 and π 2 together with their sine and cosine are displayed on a 1st quadrant of a unit circle. The x -axis can be thought as the cosine axis while the y -axis can be thought as the sine axis. Since π = 180 , we have π
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Unformatted text preview: 6 = 30 , 4 = 45 , 3 = 60 and 2 = 90 . Question : What is arcsin 1 2 ? Answer : Suppose arcsin 1 2 = sin = 1 2 (arcsin is the inverse function of sin) = 6 (refer to the above picture). Here, we assume that the angle is in the 1st quadrant. 1...
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