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If cos –1 ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ x 3 2 + cos –1 ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ x 4 3 = 2 π ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ > 4 3 x , then x is equal to

1. 10 145
2. 11 145
3. 12 145
4. 12 146

Correct answer: 12 145

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