Jika tan 25= p .Hitung (tan 295-tan 45)/(1+2tan295.tan45)
Matematika
Nza23
Pertanyaan
Jika tan 25= p .Hitung (tan 295-tan 45)/(1+2tan295.tan45)
1 Jawaban
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1. Jawaban Anonyme
jawab
tan 25 = p
cot 25 = 1/(tan 25) = 1/p
tan 295 = tan (270 + 25) = cot 25 = 1/p
( tan 295 -tan 45) / (1 + 2 tan 295 . tan 45)=
= (1/p - 1) / (1 + 2 (1/p)(1))
= (1/p -1 )/ (1 + 2/p)
= (1 - p)/(p+2)