buktikan bahwa tan a + cot a = sec a . cosec a ?
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buktikan bahwa tan a + cot a = sec a . cosec a ?
1 Jawaban
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1. Jawaban abyandaffa11
tan a + cot a = sec a . cosec a
sin a/cos a + cos a/sin a = sec a . cosec a
(sin^2 a + cos^2 a)/cos a . sin a = sec a . cosec a
1/(cos a . sin a) = sec a . cosec a
sec a . cosec a = sec a. cosec a
(Terbukti)