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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

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

4 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
						
4 years ago
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