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Grade: 11
        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
3 years ago

Answers : (1)

Faiz
107 Points
							-> 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
						
3 years ago
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