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Evaluate the following: tan 7° tan 23° tan 60° tan 67° tan 83°

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Evaluate the following:

tan 7° tan 23° tan 60° tan 67° tan 83°
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tan 7° tan 23° tan 60° tan (90° - 23) tan (90° - 7°)
⇒ tan 7° tan 23° tan 60° cot 23° tan 60°
1 ∙ 1 ∙ √3 = √3

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