apphysicsBhelp.
vectorAhasamagnitudeof10unitsandmakesanangleof30degreewiththehorizontalx-axis.vectorBhasamagnitudeof25unitsandmakesanangleof50degreewiththenegativex-axis.whatisthemagnitudeoftheresultantbetweenthesetwovectors?
A.20
B.35
C.15
D.45
E.25
(本题出自barronAPphysicsBpage62-5)