document.write( "Question 738501:  If angle A is acute and tanA is 2/3, them...\r
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document.write( "how do you get the answer of cot(90° − A) =2/3? \n" );
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Algebra.Com's Answer #450869 by lwsshak3(11628)    ![]() You can put this solution on YOUR website! If angle A is acute and tanA is 2/3, them... \n" ); document.write( "how do you get the answer of cot(90° − A) =2/3 \n" ); document.write( "Say, you are working a 30-60 right triangle, for example: \n" ); document.write( "let A=30º \n" ); document.write( "tan(30º)=1/√3 \n" ); document.write( "cot (90-30)=cot(60º)=1/√3 \n" ); document.write( "I used 30º for this example, but it will work for any acute angle. \n" ); document.write( "This identity also works for sin and cos functions. \n" ); document.write( "sin 30º=1/2 \n" ); document.write( "cos (90-30)=cos(60º)=1/2 \n" ); document.write( "  |