Buktikan tan A + cot = 1/sin A.cos A
Matematika
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Pertanyaan
Buktikan tan A + cot = 1/sin A.cos A
1 Jawaban
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1. Jawaban fadnara
sinA/cosA+cosA/sinA = 1/sinA.cosA
Sin²A+cos²A/sinA.cosA = 1/sinA.cosA
1/sinA.cosA= 1/sinA.cosA
terbukti!, karena sin²A+cos²A= 1