Resultant of two vectors at right angles

LEARNING OBJECTIVES

By the end of this section, you will be able to:

  • Find the resultant of two vectors at right angles to each other.
  • For finding the resultant of two vectors at right angles to each other, we make us of the pythagoras theorem.
  • This theorem states that:  hypotenuse2= base2 +height2

Let us have a look at the following image that has two vectors at right angles to each other.

  • The  magnitude of the resultant of the  addition of the above two vectors = Square root of (15)2 + (15)2 =square root of( 225+225)=21,21.
  • Thus the  resultant vector is 21.21 North-East

Note: 

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