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If z and w are two non-zero complex numb...

If z and w are two non-zero complex numbes such that |z|=|w|and argz+arg.w=`pi`,then the value of z is

A

a)`barw`

B

b)-`barw`

C

c)w

D

d)-w

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UNITED BOOK HOUSE-KALIDHAN INSTITUTION-EXERCISE
  1. If sintheta+sinphi=2,then what is the value of cos(theta+phi)?

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  2. If z and w are two non-zero complex numbes such that |z|=|w|and argz+a...

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  3. Suppose a,b,c are in A.P and a^2,b^2,c^2are in G.P if a<b<c and a+b+c=...

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  4. The number of terms in the expansion of (a+b+c)^10is

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  5. The equation of a line which makes an angle 45^@with x-axis and cuts t...

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  6. The point P divides the line-segment joining the points A(1,5)and B(-4...

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  7. The digit in the unit's place of the number [(183)! +3 ^(183)] is-

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  8. The maximum value of sinthetacosthetais

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  9. There are two children in a family.One of them is a girl child .What i...

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  10. The probability that in a family of 5 members, exactly 2 members have...

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  11. The angles of a triangle are in the ration 5:4:3 .Find the circular me...

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  12. Prove that,sqrt((sectheta-1)/(sectheta+1))=cosectheta-cottheta

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  13. If A,B,C are positive acute angles and tan A=4/7and tan B=1/7,tan C=1/...

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  14. Find the value of 1/2sec80^@-2cos20^@

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  15. Find out the three cube-roots of 8.

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  16. In how many ways can the results of the three football matches be pred...

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  17. State the binomial theorem for a positve integral index.

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  18. Is 600 a terms of the A.P{7,11,15,19,…}.Give reason for your answer.

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  19. Find the equation of the line which passes through the point (4,-6)and...

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  20. The co-ordinates of a moving point P are.[a/2(cosectheta+sintheta)b/2(...

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