Understanding, representing and using vectors

• ab

• b + a

• 3a + b

• 4a

• a + b

• a - b

• b - a

• - a

• b

Write the vector from C to A...

• a

• -a

• b

• -b

What's the y-component of the vector with a length of 8, 200° from the positive x-axis?

• -7.51

• 2.73

• -2.73

• -6.98

The vector $\overrightarrow{\ v\ }$  has a magnitude of 89.7 feet and a direction of  $12\degree\ 48'$ . Find the magnitude of its vertical component.

• 887.47 feet

• 19.87 feet

• 19.38 feet

• 87.58 feet

Which could NOT be used to find the component form of this vector?

• $<3\cos310\degree,\ 3\sin310\degree>$

• $<3\cos\left(-50\degree\right),3\sin\left(-50\degree\right)>$

• $<3\cos50\degree,\ 3\sin50\degree>$

Find the component form of the vector. Round to three decimals.

• <16.116, 7.798>
• <16.298, 7.335>
• <16.892, 7.530>
• <16.314, 7.607>

Given points A(3, 2, -4) and B(2, 1, -1), so the vector AB is

• i + 3j -5k

• -i -3j +3k

• i -j -5k

• -i -j +3k

 $\overrightarrow{OB}$  as a column vector is

• 
• 
• 
• 

Write the vector from A to D...

• x + y + z

• x - y + z

• -x + y + z

• x - y - z