Cos x (tan x + cot x) = csc x
Matematika
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Pertanyaan
Cos x (tan x + cot x) = csc x
1 Jawaban
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1. Jawaban Anonyme
Bab Trigonometri
Matematika SMA Kelas X
cos x (tan x + cot x)
= (cos x . tan x) + (cos x . cot x)
= (cos x . sin x/cos x) + (cos x . cos x/sin x)
= sin x + (cos² x)/sin x
= (sin² x + cos² x)/sin x
= 1/sin x
= cosec x
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