Question

PROVE


AND GET BRAINLISTED:)​

Answer 1

Answer:1

Apply the formula tanθ1+ tanθ2

all will add up and give the resultant as 1.

Hence proved

Answer 2

proof :-

Here , L.H.S.

tan9°• tan27°• tan45°• tan63°• tan81°

=(tan9°• tan81°)•(tan27°• tan63°)•tan45°

=(cot81°• tan81°)•(cot63°•tan63°)•tan45°

[because tanx = cot (90°-x) ]

=( 1 )•( 1 )•( 1 )

[ because tanx•cotx = 1 and

tan45° = 1 ]

= 1

= R.H.S.