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Some summed sin and cos (Posted on 2009-09-28) Difficulty: 2 of 5
Substitute each of the capital letters in bold by a different digit from 0 to 9 to satisfy this system of equations. All the angles are in degrees and none of the numbers can contain any leading zero.
  • cos NE + cos DG = cos AE, and:
  • sin SH + sin AH = sin NH, and:
  • cos RR + cos TS = cos R, and:
  • sin ST + sin ET = sin OT.

See The Solution Submitted by K Sengupta    
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Some Thoughts Secret Revealed (spoiler) Comment 2 of 2 |
Well, Charlie did all the work and I get to collect the glory.  I notice that in Charlie's solution,

   0123456789 = HEADSTRONG. 

Surely not a coincidence.

  Posted by Steve Herman on 2009-09-29 01:01:35
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