document.write( "Question 1190008: Please help me to solve this assignment,Given that CosA=2/5,find the exact value of Cos2A \n" ); document.write( "
Algebra.Com's Answer #821596 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Look up \"Double angles\" on Wikipedia. \n" ); document.write( " |