prove that tan 70.tan 65.tan 70.tan 65=1
Nilamadhaba Pradhan , 12 Years ago
Grade 12th Pass
Trigonometry> prove that tan 70.tan 65.tan 70.tan 65=1
2 Answers
Haroldo Martins
Last Activity: 12 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
Haroldo Martins
Last Activity: 12 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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