2-sec^x/sec^x= 1-2 sin^x buktikan
Matematika
lintangdila19
Pertanyaan
2-sec^x/sec^x= 1-2 sin^x
buktikan
buktikan
1 Jawaban
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1. Jawaban bapakdr
(2 - sec²x)/sec²x
= 2/sec²x - sec²x/sec²x
= 2/(1/cos²x) - 1
= 2 × (cos²x/1) - 1
= 2 cos²x - 1
= 2(1 - sin²x) - 1
= 2 - 2sin²x - 1
= 1 - 2sin²x