Originally Posted by
razorfinnish
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I'm highly doubtful about this being curve based (I bet 1.25 is 90 degrees, really.), but rather linear (e.g. base FOV, 75, multiplied by the specified value), thus 82.5 degrees of FOV would be a multiplier of 82.5 / 75 = 1.1
The baseFOV * Factor makes the most sense.
But it looks like you lost your bet about what 90 degrees should be since 75 * 1.20 = 90.00. 
Edit: Here is a small table I generated, with the assumption that BaseFOV=75 and BaseFOV * FOVFactor = FOV
Code:
75 * 1.00 = 75.00
75 * 1.02 = 76.50
75 * 1.04 = 78.00
75 * 1.06 = 79.50
75 * 1.08 = 81.00
75 * 1.10 = 82.50
75 * 1.12 = 84.00
75 * 1.14 = 85.50
75 * 1.16 = 87.00
75 * 1.18 = 88.50
75 * 1.20 = 90.00
75 * 1.22 = 91.50
75 * 1.24 = 93.00
75 * 1.26 = 94.50
75 * 1.28 = 96.00
75 * 1.30 = 97.50
75 * 1.32 = 99.00
75 * 1.34 = 100.50
75 * 1.36 = 102.00
75 * 1.38 = 103.50
75 * 1.40 = 105.00
75 * 1.42 = 106.50
75 * 1.44 = 108.00
75 * 1.46 = 109.50
75 * 1.48 = 111.00