What is the magnitude of the resultant vector of a and b, shown below?

Note: You did not provide the the diagram you referred to but i will explain how to find the magnitude of the resultant of two vectors, you can then put your own values whenever you have them.

For any, , and , the magnitude of the resultant will be  

Step-by-step explanation:

The resultant of two vectors and is the addition of the two vectors

I.e.

If  and , then

The magnitude of the Resultant will then be :

step-by-step explanation:

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