Question

plzz answer the question​

Answer 1

Answer:

=cot 10•cot 30•cot 80

=cot 10 × cot 30 × tan(90-80)

=cot 10 × cot 30 × tan 10

=cot 10 × cot 30 × 1/cot 10

{Since tan = 1/cot, so they will get cancelled)

=cot 30

= root 3