Question

Buktikan identitas trigonometri berkut...
please jawab..yang benar
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Answer 1

Sin(x) cosec(x)-sin^2(x)=cos^2(x)

sin(x).[1/sin(x)]-sin^2(x)=cos^2(x)

1--sin^2(x)=cos^2(x)

cos^2(x)=cos^2(x)

maaf kalo salah