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Mod(Z-25i)<15 then diffrence of min,max of argZ Sol) mod (Z-25i)<15,means Z lies in the circumference of the circle with (0,25) at its centre and radius less then 15.so difference in the max and min value of arg Z is given by the angle between the common tangents to the circle from origin.the length of the tangents are 20 units( root [(25)^2 - (15)^2])
Hence the angle between y axis and a tangent is tan inverse (15/20) = tan inverse 3/4=37 degree.hence the total diff. = angle between the tangents = 2 times the angle between the y axis and one of the tangents.
=2.37=74 degree or 2.[tan inverse 3/4]
= 74 degree or [tan inverse (24/7) ]
The light on a lighthouse blinks 45 times a minute. How long will it take the light to blink 405 times? Divide 405 by 45 to get 9 minutes.
i dint get how to do math promblems
1 1/3:2/3:1/6
find inverse of [1 2 3 2 4 5 3 5 6]
if a+1/b=b+1/c=c+1/a then the value of abc is
Set M= {m''s/m is a number from 5 to 10}
/100*4500/12
A,B,C are natural numbers and are in arithmetic progressions and a+b+c=21.then find the possible values for a,b,c Solution) a+b+c=21 a+c=2b 3b=21 b=7 a can be 1,2,3,4,5,6 c c
find the value of x for which the distance between the points p(4,-5) and q(12,x) is 10 units
If a mean score is 89 with a standard deviation of 8 points. What is the least score you can make and be in the top 20%?
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