(tan x + cot x) . Sin x = ?
Matematika
Jha1
Pertanyaan
(tan x + cot x) . Sin x = ?
1 Jawaban
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1. Jawaban ArZain
(tan x + cot x) . sin x
= ((sin x/cos x) + (cos x/sin x)) . sin x
= (sin² x + cos² x)/(sin x cos x) . sin x
= 1/(sin x cos x) . sin x
= 1/cos x