document.write( "Question 172275: I have two questions. One of them I came up with an answer, but am not sure if it is right.
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document.write( "1. Find the esact value of: tan(-3pi)
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document.write( "2. Find the exact value of: sin60 degrees - cos60 degrees.
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document.write( "For this I came up with an answer of 0.366
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document.write( "I have to show all my work.
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document.write( "Thanks
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Algebra.Com's Answer #128335 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! I have two questions. One of them I came up with an answer, but am not sure if it is right. \n" ); document.write( "1. Find the esact value of: tan(-3pi) \n" ); document.write( "-3pi is the same as -pi, since 2pi is a complete revolution. Then, -pi is the same as pi, because it's halfway around the circle. \n" ); document.write( "pi radians, or 180 degs, puts the point on the x-axis, so the tan is y/x, or 0/1. Tan(-3pi) = 0 \n" ); document.write( "------------------- \n" ); document.write( "2. Find the exact value of: sin60 degrees - cos60 degrees. \n" ); document.write( "sin(60) - cos(60) = (sqrt(3)/2) - 1/2 \n" ); document.write( "= (1/2)*(sqrt(3) - 1) \n" ); document.write( "That is 0.366, but when an exact value is asked for, it's in the form I gave. \n" ); document.write( "For this I came up with an answer of 0.366 \n" ); document.write( "I have to show all my work. \n" ); document.write( " \n" ); document.write( " |