Q3 of 138 Page 24

Mark the correct alternative in each of the following:

If then the angle between is


Here, _____________(1)





() ___________(2)


From (1)





() _________(3)


From (1)





() __________(4)


From (2) and (3)


____________(5)


From (2) and (5)




Let θ be the angle between and


Then,




So,


i.e. angle between and is .

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