document.write( "Question 1061974: Find each exact value if 0 < x < pi/2 and 0 < y < pi/2
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document.write( "Cos(x-y) if sinx= 7/25 and cosy= 2/3\r
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document.write( "This is what I have so far:
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document.write( "cosa•cosB+sina•sinB
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document.write( "(7/25)(2/3)+(7/25)(sqrt5/3)
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document.write( "14/75+7sqrt5/75
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document.write( "14+7sqrt5/75\r
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document.write( "I'm not sure if I'm finished with the problem or if I have more steps or if I have just done the problem completely wrong. The answer doesn't match the key so I'm curious as to what I'm doing wrong. Thank you! \n" );
document.write( "
Algebra.Com's Answer #676798 by ikleyn(52908) You can put this solution on YOUR website! . \n" ); document.write( "For other examples of similar solved problems 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 \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-II in this site\r \n" ); document.write( "\n" ); document.write( " - ALGEBRA-II - YOUR ONLINE TEXTBOOK.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic \"Trigonometry: Solved problems\". \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |