Question

without using trigonometric tables evaluate ofthe following cot 18 degree cot 39 degree cot 51 degree Cot 60 degree cot 72 degree​

Answer 1

hope this is helpful...

Answer 2

Step-by-step explanation:

cot18°×cot39°×tan39°×cot60°×tan18°

(cot18°×tan18°)×(cot39°×tan39°)×cot60°

1×1×1/√3

1/√3answer

cot60°=1/√3