Mr. Gates went to the mall with $20. He bought a bra for $7.98, an adult diaper for $5.99, and a Barbie Doll for $1.50. How much
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This picture should provide a full answer. What I did was rearrange the equation to get Tan(x) on one side, then in order to get rid of the Tan, I used Arctan, which got us the final answer.
