document.write( "Question 1838: I was given the question to find the angles,
\n" ); document.write( "Sin^2 theta = 2cos theta + 2
\n" ); document.write( "So I get
\n" ); document.write( "1-cos^2 theta = 2cos theta + 2
\n" ); document.write( "I think putting this into Ax^2 + Bx +C = 0 would work but is this\r
\n" ); document.write( "\n" ); document.write( "Cos^2T + 2CosT +1 = 0\r
\n" ); document.write( "\n" ); document.write( "And then plug into quadratic??\r
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Algebra.Com's Answer #674 by longjonsilver(2297) $\"\"$ $\"About$

You can put this solution on YOUR website!
from cos^2T + 2cosT +1 = 0, let x=cosT, therefore $\"x%5E2+%2B+2x+%2B+1+=+0\"$ . You can factorise this (or put it in the formula)...\r
\n" ); document.write( "\n" ); document.write( "factorised...(x+1)(x+1)=0, so x=-1, so cosT = -1.\r
\n" ); document.write( "\n" ); document.write( "Now you need to tell me the range of theta, so you can find the answers.\r
\n" ); document.write( "\n" ); document.write( "cosT = 1 is 0 degrees, and -1 is 180 degrees.\r
\n" ); document.write( "\n" ); document.write( "cheers
\n" ); document.write( "Jon. \n" ); document.write( "

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