Compute $\arctan ( \tan 65^\circ - 2 \tan 40^\circ )$. (Express your answer in degrees as an angle between $0^\circ$ and $180^\circ$.)
Question:
Compute $\arctan ( \tan 65^\circ - 2 \tan 40^\circ )$. (Express your answer in degrees as an angle between $0^\circ$ and $180^\circ$.)
Answer:
Let's think step by step.

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25^\circ
Compute $\arctan ( \tan 65^\circ - 2 \tan 40^\circ )$. (Express your answer in degrees as an angle between $0^\circ$ and $180^\circ$.)
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