Mathematics · Trigonometry

The value of tan 9° - tan 27° - tan 63° + tan 81° is equal to:

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14✓
28
32
41

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The value of tan 9° - tan 27° - tan 63° + tan 81° is equal to:

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The value of tan 9° - tan 27° - tan 63° + tan 81° is equal to:

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