document.write( "Question 605751: I've just started home schooling my nephew, and I've totally forgotten how to work with sin, cosine and tangent (haven't done this stuff since I was in 10th grade). The problem: Solve to the nearest hundredth sin(x)/5=sin(40)/9\r
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document.write( "I simplified sin(40) then cross multiplied, which then looked like this:
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document.write( "3.21=9*sin(x); I isolated sin(x) by dividing both sides by 9, so this is where I ended up: 0.36=sin(x)\r
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document.write( "Am I even close to the right track?
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document.write( "Thank you
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document.write( "Tami Knorr
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Algebra.Com's Answer #381796 by htmentor(1343)![]() ![]() You can put this solution on YOUR website! Yes, that is correct so far. No you need to find the angle whose sin is 0.36 (actually you should keep a few more digits and then round the final answer) \n" ); document.write( "sin(x) = 0.3571 \n" ); document.write( "x = arcsin(0.3571) = 20.92 deg. \n" ); document.write( " |