Question

à + B =ē and at A+B= c² then prove that
A and B are perpendicular to each other​

Answer 1

Answer:

give that

vector a+ vector b=vector c

which means

c²=a²+b²+2 A B cosx

where x is the angle between vector a and vector b

but it is given that

thus

c²=c²+2 A B cosx

2A B cosx=0

A and B are 0 therfore

cosx =0

x=90

Explanation:

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