6 O 1 points LanCalc10 111054 Find the component form of u v

6. O -1 points LanCalc10 11.1.054 Find the component form of u v given the lengths of u and v and the angles that u and v make with the positive x-axis. IIVI 2, 6v- 600

Solution

u = ||u|| * cos (0) i + ||u|| * sin (0) j = 8 i + 0 j

v = ||v|| * cos (60) i | ||v|| * sin (60) j = 2(1/2) i + 2(1.73/2) j=i+1.73j

u + v = ( 8 + 1 ) i + ( 0 + 1.73 ) j = 9 i + 1.73 j

second question clearly not visibile to me