Find The Value of tan4° tan43° tan47° tan86°
Answered
Find the value of
tan4° tan43° tan47° tan86°
- 1/2
- 2/3
- 2
- 1
Best answer
Answer: (4) 1
Explanation:-
tan 4o° tan 43° tan 47° tan 86°
tan (90 – 86)o tan(90 – 47)o tan 47o tan 86o
= cot 86o cot 47o tan 47o tan 86o
= tan 47o tan 86o / tan 86o tan 47o
= 1
Hence, the answer is (4) 1.