buktikan tan x * sin x + cos x = sec x
Matematika
reginayani04
Pertanyaan
buktikan tan x * sin x + cos x = sec x
1 Jawaban
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1. Jawaban daffaci
tan x . sin x + cos x = sec x
= sin x/cos x . sin x + cos x
= sin^2 x/cos x + cos x
= (sin^2 x + cos^2)/cos x
= 1/cos x
= sec x