?sin(a-b)sina.sinb
cevap cotb-cota
Yazdırılabilir görünüm
?sin(a-b)sina.sinb
cevap cotb-cota
sin(a-b)=sina.cosb-cosa.sinb
(sina.cosb-cosa.sinb)/sina.cosb=
(sina.cosb)/(sina.sinb)-(cosa.sinb)/(sina.sinb)=?(mesela (2+4)/2=(2/2)+(4/2))
(cosb/sinb)-(cos/sina)=(cotb-cota).