Find area of region r that lies outside circle r=a, inside circle r=2asin?

letut

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Find area of the region r that lies outside the circle r=a and inside the circle r=2asin?
 
Find area of the region r that lies outside the circle r=a and inside the circle r=2asin?
Your question is incomplete.You did not define an argument for sin function.
 
tnx.but i haven't find anything to define the angle.can u do it now?

Your question is incomplete.You did not define an argument for sin function.
tnx.but i haven't find anything to define the angle. can u do it now?
 
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tnx.but i haven't find anything to define the angle. can u do it now?
Are you saying that, in the original exercise, there is no argument for the sine function? If so, then please consult with your instructor regarding the missing information. Thank you! ;)
 
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