SADI Muslihuddin Abumuhammad Abdulloh ibni Mushrifuddin (1203/8, Sheroz—1292, hamon jo), shoir, nasrnavis va mutafakkiri fors-tojik. …
Mufassal »TEOREMAI KOSINUSHO
TEOREMAI KOSINUSHO, 1) dar trigonometriyai hamvor, teoremaest, ki bino ba on kvadrati yak tarafi sekunja ba summai kvadrathoi du tarafi digar, bo hosili zarbi duchandai in tarafho bar kosinusi kunji bayni onho barobar ast, yane s2 = a2 + b2—2ab sos (1), ki in jo a, b, s — tarafhoi …
Mufassal »