Vectors - Trig HON

If c=<-5, 4> and d=<8, 0>, calculate 2c+d

• <-2, 8>
• <-2, 0>
• <6, 8>
• <6, 0>

If v =〈a,b〉, then a is the ___________ component of v.

• vertical
• horizontal
• parallel
• slope

Find the angle between u and v.

• 78.930^o
• 33.691^o
• 101.070^o
• 146.310^o

If the dot product of two vectors is equal to zero, then what do we know about the two vectors? Select all that are correct.

• They are parallel.

• They are orthogonal.

• They are neither.

• who knows?????????

• They are perpendicular

Find the angle between the two vectors <3, 4> and <4, -3>

• 90°
• 45°
• 53.13°
• 106.26°

Add

 $<5,\ -2>+<-4,\ 8>$  

•  $<-9,\ 10>$  

•  $<3,\ 4>$  

•  $<1,\ 6>$  

• No, they have different magnitudes and different directions.

• Yes, they are equivalent.

• No, they have the same magnitude, but different directions.

• No, they have the same direction, but different magnitudes.

Find the magnitude of the vector <-5, 12>

• 13
• 10.91
• 7
• 17

Find the magnitude of a vector using ...

• Sine & Cosine
• Inverse Tangent
• Pythagorean Theorem
• Multiplication

Determine the direction and magnitude of the vector 〈7,18〉

• Direction 21.3°
  Magnitude 19.3
• Direction 68.7°
  Magnitude 19.3
• Direction 21.3°
  Magnitude 373
• Direction 68.7°
  Magnitude 373