Question

help me to solve it.
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Answer 1

Tan 12 tan38 tan52 tan 60 tan 78

=tan 12 tan 38 cot (90-52) tan 60 cot (90-78)

=1/cot12 1/cot38 cot38 tan60 cot 12

=Tan60

Answer 2

Answer:

Answer is { square root of 3 }