The value of tan4° tan43° tan47° tan86° is:
Answer & explanation
Correct answer: option 3
tan4° tan43° tan47° tan86°
= (tan4° tan86°) (tan43° tan47°)
*( tan (90-θ) = cotθ, tanθ cotθ = 1)*
= (tan4° cot4°) (tan43° cot43°)
= 1 × 1 = 1
The value of tan4° tan43° tan47° tan86° is:
Correct answer: option 3
tan4° tan43° tan47° tan86°
= (tan4° tan86°) (tan43° tan47°)
*( tan (90-θ) = cotθ, tanθ cotθ = 1)*
= (tan4° cot4°) (tan43° cot43°)
= 1 × 1 = 1