Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Transcribed Image Text:#2 Given
1,3
- and
are unit vectors
J = 51
✓ = 25
-7Angle between 2 and is 120
Now, U + V
251 +25
5î
Magnitucle of 2 + 2 = 10 + 7 )
= 15↑ + 2₁1
=√5² +2²
= √25 +4
= √29
Magnitude is £29, and the
5₂ ^ + 3/2a J
direction is J29
U + V
Unit vector in direction of (+7)=√1
=
=5²1 +23
√29
= 5 î+ 2
J29
529
Transcribed Image Text:î and ĵ are unit vectors. An angle of 120° exists between vectors ū and where u
2ĵ. Determine the magnitude and direction of u + v. (5 marks)
= 5î and v=
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