Question

cot 85 degree - tan 65 degree
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Answer 1

Answer:

Hi friend,

cos²20+cos²70+cot25/tan65+cot5cot10cot60cot80cot85

=cos²20+(sin20)²+tan65/tan65+cot5cot10cot60tan10tan5

=since cos²x+sin²x=1

1+1+cot60

2+1/√3

I hope this will help u :)