document.write( "Question 922875: Hello!
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document.write( "The question is: If theta is an angle of a right triangle with sin=3/5, please find sec(theta-2pi), cos(-theta), and sin(-theta).
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document.write( "I have the answers, I'm just unsure of what is meant by sec(theta-2pi).
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document.write( "Thank you for the help! \n" );
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Algebra.Com's Answer #559772 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! The question is: If theta is an angle of a right triangle with sin=3/5, please find sec(theta-2pi), cos(-theta), and sin(-theta). \n" ); document.write( "*** \n" ); document.write( "use x for theta (I don't type very well) \n" ); document.write( "working with a (3-4-5) right triangle. \n" ); document.write( "sinx=3/5 \n" ); document.write( "cosx=4/5 \n" ); document.write( ".. \n" ); document.write( "sec(x-2π)=1/cos(x-2π) \n" ); document.write( "cos(x-2π)=cosxcos2π+sinxsin2π=4/5*1+3/5*0=4/5 \n" ); document.write( "sec(x-2π)=5/4 \n" ); document.write( ".. \n" ); document.write( "cos(-x)=cosx=4/5 \n" ); document.write( "sin(-x)=-sinx=-3/5\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |