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Question #950a6

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Feb 22, 2017

#I=44sin(theta)+44sin(theta+pi/14)#

Using formula
#sinC+sinD=2sin((C+D)/2)cos((C-D)/2)#

#=>I=44(sin(theta)+sin(theta+pi/14))#

#=>I=44*2sin(theta+pi/28)cos(pi/28)#

#=>I=88cos(pi/28)sin(theta+pi/28)#

#=>I=Rsin(theta+a)#

Where #R=88cos(pi/28) and a= pi/28#

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