Question

cot10.cot30.cot80 find value

Answer 1

We have to simplify
cot 10° . cot 30° . cot 80°   ......... (1)
cot 10° can be written as 
cot 10° = cot (90° - 80°)
cot 10° = tan 80°     [ ∵ cot (90° - θ) = tan θ ]
Put this value in (1) , we get:
   tan 80° . cot 30° . cot 80°
=  tan 80° . cot 30° . 1 / tan 80°    [ ∵ cot θ = 1 /  tan θ ]
Simplifying, we get:
   cot 30° = √ 3 
Thus the required answer is √ 3.
Hope it will help you. Thanks.

Answer 2

Answer:

Step-by-step explanation:

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