Question

Show that: cot30°cot40°+ cot110°cot40°+ cot30°cot110°= 1

Answer 1

Answer:

Hence Proved

Step-by-step explanation:

Cot 30°=1.7

Cot 40°=1.1

Cot 110°=-0.3

so,

1.7*1.1+1.1*(-0.3)+1.7*(-0.3)

=>1.87-0.33-0.51

=>1.03 which can be written as 1

Hope it helps

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