document.write( "Question 1202997: If secx = 2, cscx < 0, find cos2x \n" ); document.write( "

Algebra.Com's Answer #838211 by Edwin McCravy(20065) $\"\"$ $\"About$

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If secx = 2,

2 is positive, the cosine and its reciprocal, \r\n" );
document.write( "the secant, is positive in QI and QIV

cscx < 0,

the sine and its reciprocal, the \r\n" );
document.write( "cosecant, is negative in QIII and QIV,\r\n" );
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document.write( "So angle x is in QIV\r\n" );
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document.write( "Let's draw angle x.  Since we are using x for the angle, we must use another\r\n" );
document.write( "letter for the axis that is normally called the x-axis.  We'll make it the u\r\n" );
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document.write( "find cos2x\r\n" );
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document.write( "Edwin

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