Unit+Circle



Overview The unit circle is a mathmatical tool used to help solve trigonometric problems. The units circle's center is located at the origin, and its radius is 1 unit. It is just like a basic circle in which one revolution is 360 degrees or two pie in radians. It is also broken down into four quadrant between 0, 90, 180, 270, and 360 degrees. Some simple terms associated with the unit circle are intial side which is the initial side of an angle. The terminal side is the side of an angle that rotates. An angle on the unit circle is considered to be in standard position if the initial side is on the x-axis. The unit circle's main use is to find angle degrees and to solve

•Describe angles and use terms associated with the unit circle •Use degrees and radians to measure angles on the unit circle •Evaluate trigonometric functions using the unit circle •Use domains and periods to evaluate sin and cosine functions •Use the six trigonometric functions Sine, cosine, tangent, cosecant, secant, and cotangent •Solve right triangles using the unit circle •Evaluate trigonometric functions of any angle •Use reference angles to evaluate trigonometric funtions

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 * Table of Contents || Alex ||
 * Overview || Steve ||
 * Objectives || Steve ||
 * Interactive Sites || Brittany ||
 * Images || Alex, Steve ||
 * 4.1 powerpoint || Brittany ||
 * 4.2 powerpoint || Alex ||
 * 4.3 powerpoint || <span style="font-size: 120%; color: #ff5900; font-family: 'Comic Sans MS', cursive;">Alex ||
 * <span style="font-size: 120%; color: #ff5900; font-family: 'Comic Sans MS', cursive;">4.4 powerpoint || <span style="font-size: 120%; color: #ff5900; font-family: 'Comic Sans MS', cursive;">Alex ||
 * <span style="font-size: 120%; color: #ff5900; font-family: 'Comic Sans MS', cursive;">Voki || <span style="font-size: 120%; color: #ff5900; font-family: 'Comic Sans MS', cursive;">Steve ||
 * <span style="color: #f660b2; font-family: 'Comic Sans MS', cursive;"><span style="font-size: 120%; color: #ff5900; font-family: 'Comic Sans MS', cursive;">Practice Quiz and Answers || <span style="font-size: 120%; color: #ff5900; font-family: 'Comic Sans MS', cursive;">Steve ||
 * <span style="color: #f660b2; font-family: 'Comic Sans MS', cursive;"><span style="font-size: 110%; color: #ff5900; font-family: 'Comic Sans MS', cursive;">Formula sheet || <span style="font-size: 110%; color: #ff5900; font-family: 'Comic Sans MS', cursive;">Brittany ||

[|Interactive unit circle] [|Animated Unit Circle]

Notes from book