document.write( "Question 962185: Use the given information about θ to find the exact values of the following.
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document.write( "cos(θ) = 56/65
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document.write( "where 0 < θ < π/2:\r
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document.write( "sin(2x)=
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document.write( "sin(x/2)=
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document.write( "cos(2x)=
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document.write( "cos(x/2)=
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document.write( "tan(2x)=
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document.write( "tan(x/2)=
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document.write( "
Algebra.Com's Answer #587841 by lwsshak3(11628) ![]() You can put this solution on YOUR website! Use the given information about x to find the exact values of the following. \n" ); document.write( "cosx = 56/65 \n" ); document.write( " \n" ); document.write( "where 0 < θ < π/2: \n" ); document.write( "sin(2x)=2*sinx*cosx=2*33/65*56/65=3696/4225 \n" ); document.write( " \n" ); document.write( "cos(2x)=cos^2(x)-sin^2(x)=3136/4225-1089/4245=2047/4245 \n" ); document.write( " \n" ); document.write( "tan(2x)=sin(2x)/cos(2x)=3696/2047 \n" ); document.write( "tan(x/2)=sin(x/2)/cos(x/2)= |