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Question #5f06f

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Jul 9, 2017

given #absveca=1 andabsvecb=1# as #veca and vecb# are unit vector

again
#abs(vecaxxvecb)=1/2#

=>#absvecaabsvecbsintheta=1/2#

=>#1*1*sintheta=1/2#

#=>theta=pi/6 #

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