Question
Mon July 16, 2012 By:
 

if two vectors vectorA & vectorB are of equal magnitude &mutually perpendicular show that by vector diagram. the vector sum and diference will of same magnitude and mutually perpendicular

Expert Reply
Tue July 17, 2012
Let two vectors be as shown:
Using triangle law of vector addition:
C = A+B will be
and to find difference:
D = A-B
Clearly on superimposing these two we get:
In these two triangles:
|C| = |D|
and these two are perpendicular to each other because the two trianglesa are perpendicular to each other.
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