document.write( "Question 1182618: Evaluate the six trigonometric function of: s=2π/3. Show your solution.
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Algebra.Com's Answer #812708 by Edwin McCravy(20060) $\"\"$ $\"About$

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Evaluate the six trigonometric function of: s=2π/3. Show your solution.

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document.write( " is 120^o, has a referent angle of 60^o and is in the second quadrant, \r\n" );
document.write( "so we draw a 30-60-90 triangle with hypotenuse=r=2, adjacent=x=1, and\r\n" );
document.write( "opposite=y=√3\r\n" );
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document.write( "However, x goes left in QII, so we must make x negative, so we have x=-1\r\n" );
document.write( "instead of 1 in the graph below.  y is positive because it goes upward.\r\n" );
document.write( "r, the hypotenuse or radius vector is always taken positive in all quadrants.\r\n" );
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document.write( "adjacent = x = -1,  opposite = y = √3, hypotenuse = r = 2\r\n" );
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document.write( "Edwin \n" );
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