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Question:-If || = || = || then angle between A and B will be:(a) 900(b) 1200(c) 00(d) 600Plzz tell me with procedure hw to solve this

Mohammad Kavish , 9 Years ago
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anser 3 Answers
Akshat Jain

Last Activity: 9 Years ago

It is 120. 
Use the formula of vector sum by using |\vec{A}| = |\vec{B}|
and angle between them 120
 
 
 

Mohammad Kavish

Last Activity: 9 Years ago

Akshat I dnt get it

noogler

Last Activity: 9 Years ago

given Ia+bI=IaI=IbI
on squaring it
Ia+bI2=IaI2=IbI2
IaI2+IbI2+2IaIIbIcoso=IaI2
2IaI2+2IaI2coso=IaI2 ….....................................since IaI=IbI
2(1+coso)=1
coso=-1/2................................o=1/2
o is angle btw a and b

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