sin D cosD secD cscD
Matematika
ook4
Pertanyaan
sin D cosD secD cscD
1 Jawaban
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1. Jawaban Fitra910
sin D cos D sec D cosec D = sin D cos D 1/cos D 1/sin D = 1
terbukti
(tan A + cot A) cos A sin A - cos^2 A = (sin A/cos A + cos A/sin A) (cos A sin A) - cos^2 A = (sin^2 A + cos^2 A/ cos A sin A) cos A sin A - cos^2 A = sin^2 A + cos^2 A - cos^2 A = sin^2 A
terbukti