document.write( "Question 682055: I am trying to isolate b2 to substitute into another equation. I can not find the right trig identity to isolate b2. Can someone please help to isolate b2? \r
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\n" ); document.write( "\n" ); document.write( "(a1)cos(b1) + (a2)cos(b1+b2) = p
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Algebra.Com's Answer #423018 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
(a1)cos(b1) + (a2)cos(b1+b2) = p\r
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\n" ); document.write( "\n" ); document.write( "(a2)cos(b1+b2) = p - (a1)cos(b1)\r
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\n" ); document.write( "\n" ); document.write( "cos(b1+b2) = [ p - (a1)cos(b1) ]/(a2)\r
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\n" ); document.write( "\n" ); document.write( "b1+b2 = arccos{ [ p - (a1)cos(b1) ]/(a2) }\r
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\n" ); document.write( "\n" ); document.write( "b2 = arccos{ [ p - (a1)cos(b1) ]/(a2) } - b1
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