document.write( "Question 550923: For what numbers q, 0≦q≦2p does cosq = 1?
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Algebra.Com's Answer #359265 by Edwin McCravy(20056) $\"\"$ $\"About$

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For what numbers q, 0≦q≦2p does cosq = 1?
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document.write( "On the unit circle, each point is (cos(q),sin(q)), where q is the angle between \r\n" );
document.write( "the right hand side of the x-axis and the radius drawn to that\r\n" );
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document.write( "So you want to know where cosq = 1.\r\n" );
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document.write( "Since the x-coordinate of every point on the unit circle IS the\r\n" );
document.write( "cosine of the angle that the radius to that point makes with\r\n" );
document.write( "the right side of the x-axis, we are looking for a point on that\r\n" );
document.write( "circle with an x-coordinate of 1.  There is only one point on\r\n" );
document.write( "the unit circle that has its x-coordinate as 1, and that is the\r\n" );
document.write( "point (1,0)\r\n" );
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document.write( "and the value of q there is either 0 or 2p.  \r\n" );
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document.write( "So that's the answer.  q = 0 or 2p.\r\n" );
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document.write( "Edwin

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