buktikan cotan A + tan A /cosec A = sec A
Matematika
Icha080501
Pertanyaan
buktikan cotan A + tan A /cosec A = sec A
1 Jawaban
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1. Jawaban Robinn
secx = cotx + tanx / cscx
secx = cosx/sinx + sinx/cosx : cscx
secx = cos²x + sin²x / sinxcosx : cscx
secx = 1/sinxcosx : 1/sinx
secx = 1/sinxcosx . sinx/1
secx = 1/cosx
secx = secx