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The value of tan4° tan43° tan47° tan86° is: |
\(\sqrt {3}\) \(\frac{1}{\sqrt {3}}\) 1 \(\sqrt {2}\) |
1 |
tan4° tan43° tan47° tan86° = (tan4° tan86°) (tan43° tan47°) *( tan (90-θ) = cotθ, tanθ cotθ = 1)* = (tan4° cot4°) (tan43° cot43°) = 1 × 1 = 1 |
