tanA.Tan2A=1 then "tan square 2A+tan square 2A= ?
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tanA . tan 2A =1 ..........................................eq: 1
tan A .2tan A/(1-tan square A) = 1
2 tan square A /((1-tan square A) = 1
2 tan square A = 1-tan square A
3 tan square A = 1
tan square A = 1/3
from eq :1...,
(1/3) × tan 2A = 1
tan 2A= 3
tan square 2A + tan square 2A = 3×3 +3×3
= 9+9
= 18
tan A .2tan A/(1-tan square A) = 1
2 tan square A /((1-tan square A) = 1
2 tan square A = 1-tan square A
3 tan square A = 1
tan square A = 1/3
from eq :1...,
(1/3) × tan 2A = 1
tan 2A= 3
tan square 2A + tan square 2A = 3×3 +3×3
= 9+9
= 18
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