Let 
and 
(a) Find the magnitudes of (a) 
(b) 
(c) 
and (d) 
Given that vector a=4i+3j and b=3i+4j.
A) magnitude of vector 
= 
B) magnitude of vector 
= 
C) magnitude of 
+
= 
(since Vector 
+
=7i +7j)
D) magnitude of 
- 
= 
(since Vector 
-
= i +j)
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