- A1
- B√3
- C1/3
- D1/√3
Step-by-Step Solution
Pair complementary angles: tan5°·tan85° = tan5°·cot5° = 1 and tan25°·tan65° = 1. Only tan30° = 1/√3 survives.
Answer: D) 1/√3
The value of tan5°·tan25°·tan30°·tan65°·tan85° is:
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