document.write( "Question 1043325: if sin x=3/5,pi/2 < x < pi, then find the value of cos x,tan x,sec x and cot x \n" ); document.write( "
Algebra.Com's Answer #658493 by ikleyn(52782)\"\" \"About 
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\n" ); document.write( "if sin x=3/5,pi/2 < x < pi, then find the value of cos x,tan x,sec x and cot x
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document.write( "cos(x) = \"-sqrt%281+-+sin%5E2%28x%29%29\" = \"-sqrt%281-%283%2F5%29%29\" = \"-sqrt%281+-+9%2F25%29\" = \"-sqrt%28%2825-9%29%2F25%29\" = \"-sqrt%2816%2F25%29\" = \"-4%2F5%29\".\r\n" );
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document.write( "The sign \"-\" before the square root is because  pi/2 < x < pi  and cosine is negative in QII.\r\n" );
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document.write( "Now, knowing sin(x) and cos(x), you can easily calculate the remaining functions on your own.\r\n" );
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\n" ); document.write( "\n" ); document.write( "For similar problems, and to extend your knowledge, see the lessons\r
\n" ); document.write( "\n" ); document.write( "    - Calculating trigonometric functions of angles\r
\n" ); document.write( "\n" ); document.write( "    - Advanced problems on calculating trigonometric functions of angles\r
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