document.write( "Question 1061978: If sin theta = -5/13 and theta terminates in 3rd quadrant find cos theta and tan theta. \n" ); document.write( "
Algebra.Com's Answer #676771 by ikleyn(52803)\"\" \"About 
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\n" ); document.write( "If sin theta = -5/13 and theta terminates in 3rd quadrant find cos theta and tan theta.
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document.write( "In QIII  \"cos%28theta%29\" = \"-sqrt%281-sin%5E2%28theta%29%29\" = \"-sqrt%281-%28-5%2F13%29%5E2%29\" = \"-sqrt%281-25%2F169%29\" = \"-sqrt%28%28169-25%29%2F169%29\" = \"-sqrt%28144%2F169%29\" = \"-12%2F13\".\r\n" );
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document.write( "Then   \"tan%28theta%29\" = \"sin%28theta%29%2Fcos%28theta%29%29\" = \"%28%28-5%2F13%29%29%2F%28%28-12%2F13%29%29\" = \"5%2F12\".\r\n" );
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