Jawabanmu

Jawaban paling cerdas!
2014-04-19T19:45:34+07:00
1. cotanx.cosx + sinx = cosec x \\  \frac{cosx}{sinx}.cosx + sinx =  \frac{1}{sinx} \\  \frac{ cos^{2}x +  sin^{2} x }{sinx} =     \frac{1}{sinx} \\  \frac{1}{sinx} =  \frac{1}{sinx}


2.  tan^{2}x -  sin^{2}x = tan^{2}x . sin^{2}x  \\  \frac{sin^{2}x}{cos^{2}x} -   \frac{sin^{2}x . cos^{2}x}{cos^{2}x} =  tan^{2}x . sin^{2}x  \\  \frac{sin^{2}x (1 - cos^{2}x)}{cos^{2}x} =  tan^{2}x . sin^{2}x \\ tan^{2}x . sin^{2}x = tan^{2}x . sin^{2}x

semoga ngerti :)
makasih :)
sama-sama :D
boleh minta bantuin lagi nggak
apa?
tentang identitas trigonometri lagi, tadi aku udah ngajuin pertanyaan lagi