document.write( "Question 1160135: Use the given information to determine the values of sine 2 theta, cosine 2 theta, and tangent 2 theta.
\n" ); document.write( "cos theta=8/17; The terminal side of theta lies in quadrant IV. \n" ); document.write( "

Algebra.Com's Answer #783365 by greenestamps(13200) $\"\"$ $\"About$

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\n" ); document.write( "(1) Use $\"cos%28x%29+=+8%2F17\"$ and $\"sin%28x%29%5E2%2Bcos%28x%29%5E2=1\"$ , and the fact that the terminal side of the angle is in quadrant IV, to find $\"sin%28x%29+=+-15%2F17\"$ .

\n" ); document.write( "(2) $\"sin%282x%29+=+2sin%28x%29cos%28x%29\"$
\n" ); document.write( "(3) $\"cos%282x%29+=+cos%28x%29%5E2-sin%28x%29%5E2\"$
\n" ); document.write( "(4) $\"tan%282x%29+=+sin%282x%29%2Fcos%282x%29\"$

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