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Please prove it fast ok my seniorsDgneiss so inspirational stuff so so so kids Wii is rub set in dry HD Etty HD Etty is Etty HD rice

Please prove it fast ok my seniorsDgneiss so inspirational stuff so so so kids Wii is rub set in dry HD Etty HD Etty is Etty HD rice

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Grade:11

1 Answers

Faiz
107 Points
7 years ago
-> tan(π/4 + x) / tan(π/4 - x)....Expanding using identities....Tan(x+y) = (tan x + tan y) / (1 - tan x tan y)...and...Tan(x-y) = (tan x - tan y) / (1 + tan x tan y)....tanπ/4=1.... -> [ (1+tan x)/(1-tanx) ] / [ (1-tanx)/(1+tanx) ] -> [ (1+tanx)² / (1-tanx)² ]... -> [ 1+tanx / 1-tanx ]²....Hence proved

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