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If cosalpha+cosbeta+cosgamma=0=sinalpha+...

If `cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+singamma" then "cos3alpha+cos3beta+cos3gamma`

A

`cos(alpha+beta+gamma)`

B

`2cos(alpha+beta+gamma)`

C

`3cos(alpha+beta+gamma)`

D

none

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DIPTI PUBLICATION ( AP EAMET)-DE MOIVRE'S THEOREM-EXERCISE 1
  1. If a=cos4pi//3+isin4pi//3" then "(1+a)^(3n)

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  2. If cosalpha+cosbeta=0=sinalpha+sinbeta" then "cos2alpha+cos2beta

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  3. If cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+singamma" then "cos3al...

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  4. If cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+singamma" then "sin3al...

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  5. If cos alpha+cosbeta+cosgamma = 0 = sinalpha + sinbeta + singamma then...

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  6. If cosalpha+cosbeta+cosgamma=0=sin alpha+sinbeta+singamma then cos^2al...

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  7. If cos alpha+cosbeta+cosgamma = 0 = sinalpha + sinbeta + singamma then...

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  8. If cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+singamma then cos(2alp...

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  9. If cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+singamma then sin(2alp...

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  10. If cosalpha+coabeta+cosgamma=0=sinalpha+sinbeta+singamma then cos(alph...

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  11. If a=cisalpha,b=cisbeta,c=cisgamma, and a/b+b/c+c/a-1=0 then cos(alph...

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  12. Let A and B denote the statements A:cosalpha+cosbeta+cosgamma=0" ...

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  13. The value of (i)^(i) is

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  14. log(logi)

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  15. sqrti+sqrt(-i)=

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  16. One value of (1+i)^(1//2) is 2^(1//4)e^(ipi//8).The other value is

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  17. The modulus of sqrt2i-sqrt(-2i) is

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  18. (cos""(pi)/(6)+isin""(pi)/(6))^(1//2)+(cos""(pi)/(6)-isin""(pi)/(6))^(...

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  19. If n is a multiple of 3 then omega^(n) + omega^(2n) =

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  20. (1+omega-omega^(2))(1-omega+omega^(2))

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