3 Expert Tips for Using the Unit Circle

unit circle  tan 30° = 1√3 To find this answer on the unit circle, we start by finding the sin and cos values as the y-coordinate and x-coordinate, respectively: sin 30° This Precalculus review lesson reviews the Unit Circle and basic trigonometric identities and gives great tips on how to remember

The equation for the unit circle is x2+y2=1 So if we know one of the two coordinates of a point on the unit circle, we can substitute that Unit Circle for Trigonometry : Quadrant II: sin, csc positive Quadrant I: all functions positive Quadrant III: tan, cot positive Quadrant IV: cos, sec

The unit circle is a circle with radius 1 Learn how to use the unit circle to find the exact values of sine, cosine and tangent with practical examples  Unit Circle Chart · The values for the special angles, 30°, 45°, and 60° · cos = x · sin = y · tan=sin⁄ · The positive and negative values for each quadrant