Sederhanakan 1 + cot² a/cot a. sec a
Matematika
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Pertanyaan
Sederhanakan 1 + cot² a/cot a. sec a
1 Jawaban
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1. Jawaban Anonyme
Kelas 10 Matematika
Bab Trigonometri
( 1 + cot² a)/(cot a . sec a)
= (cosec² a) / (cos a/sin a . 1/cos a)
= (1/sin² a) / (1/sin a)
= sin a / sin² a
= 1/sin a
= cosec a