[محمد اللبدي]

ممكن شرح للسؤآإل دآ :--
1/ IN figure If A-B+C=-7J THEN THE VECTOR A IN UNIT VECTOR NOTATION IS :
صورة للرسمة


2/ THE ANGLE BETWEEN VECTOR E=I+3J+2K AND THE POSTIVE Y-AXIT IS :