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Grade 12th PassTrigonometry

prove that tan 70.tan 65.tan 70.tan 65=1

Profile image of Nilamadhaba Pradhan
14 Years agoGrade 12th Pass
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2 Answers

Profile image of Haroldo Martins
14 Years ago

tg(70º).tg(65º).tg(70º).tg(65º)>>>>1 - logo isso é impossivel, porem se a equação for

tg(70º).tg(65º).cotg(70º).cotg(65º) , a i sim tg(70º).tg(65º).tg(70º).tg(65º) =1 pois

tg(70º).tg(65º).[1/tg(70º).1/tg(65º)]=1

Profile image of Haroldo Martins
14 Years ago

Correção

tg(70º).tg(65º).tg(70º).tg(65º)>>>>1 - logo isso é impossivel, porem se a equação for

tg(70º).tg(65º).cotg(70º).cotg(65º) , ai sim tg(70º).tg(65º).cotg(70º).cotg(65º) =1 e não tg(70º).tg(65º).tg(70º).tg(65º)=1 como escrito anteriormente

pois tg(70º).tg(65º).[1/tg(70º).1/tg(65º)]=1

 

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