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.
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.