Question

tan 5 tan 25 tan 30 tan 65 tan 85 =1 upon root 3

Answer 1

Answer:

Step-by-step explnation:

Tan

Answer 2

tan5 ×tan25× tan30× tan65 ×tan85 =1/√3

L.H.S

tan(90-85)× tan(90-65)× tan30 ×tan65× tan85

we know that tan(90- thetha) =cot thetha

so,

=cot85 ×cot 65×tan30× tan65 × tan85

=tan30. ( cot×tan=1)

=1/√3. (tan30=1/√3)

=R.H.S.

hence lhs=rhs

hence proved

hope it will really help u

by

Ankita ❤️❤️