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Mathematics: Post your doubts here!

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How do you do question 7 part 3?
for least value of arg z means the smallest angle possible
ths means the tangent to the cricle must be such tht it makes the least possible angle
so u draw the tangent from starting point O to where it makes the least possible angle with the circle
u calculate modulus of z by assuming the tangent the hypotenus of a right angled triangle.
use pythagoras theorem or sin rule if u want.
the O will be the radius of the circle
the H will the moduls of z
use sin rule. its easier.
 
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-_______- it become the e in calculator
I did it in this way is it right?.. sorry for the sloppy handwriting !!
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