Mathematics · Trigonometry
For a triangle ABC with sides a, b, and c, the product of tan(A/2) and tan(B/2) is equal to:
- 12ca + b + c
- 2a + b - ca + b + c✓
- 3c + a - ba + b + c
- 4b + c - aa + b + c
Correct answer
a + b - ca + b + c
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