MathSolver74
Tan x + cot x = sec x cosec x sin x/cos x + cos x/sin x (sin² x + cos² x)/sin x cos x = sec x cosec x 1/cos x . 1/sin x= sec x cosec x sec x . cosec x = sec x . cosec x (terbukti)
catatan: sec x = 1/cos x cosec x = 1/sin x
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dyahkusumaning
hubungannya sec x . cosec x dgn tan x + cot x itu apa?
sin x/cos x + cos x/sin x
(sin² x + cos² x)/sin x cos x = sec x cosec x
1/cos x . 1/sin x= sec x cosec x
sec x . cosec x = sec x . cosec x (terbukti)
catatan:
sec x = 1/cos x
cosec x = 1/sin x