Home
Class 12
MATHS
If x+iy=(1)/(1+ cos theta+ isin theta), ...

If `x+iy=(1)/(1+ cos theta+ isin theta)`, show that `4x^(2)-1=0`

Promotional Banner

Topper's Solved these Questions

  • COMPLEX NUMBERS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise EXERCISE -1 (C)|29 Videos
  • COMPLEX NUMBERS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise EXERCISE -1 (D)|13 Videos
  • COMPLEX NUMBERS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise EXERCISE -1 (A)|11 Videos
  • CIRCLE

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise EXERCISE - 1(e)|25 Videos
  • DE MOIVRE'S THEOREM

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise Long Answer Questions|6 Videos

Similar Questions

Explore conceptually related problems

If x +iy = (3)/(2 + cos theta + isin theta) , show that x^(2) + y^(2) = 4x - 3

If x + iy = (1)/((1 + cos theta + isin theta)) then sin^(-1) x =

1+ cos 2 theta + cos 4 theta + cos 6 theta =

If (sin theta)/(1 - cos theta) + (sin theta)/(1 + cos theta) = 4(0^@ < theta < 90^@), then find the value of theta .

If (1 + cos theta + isin theta) (1 + cos 2 theta + isin 2theta) = x + iy then y =

If (1 + cos theta - isin theta) ( 1+ cos 2 theta + isin 2 theta) = x +iy then x^(2) + y^(2) =

If x=sqrt((1- cos theta )/(1+ cos theta )), " then " (2 x)/(1-x^(2))=

If (2 sin theta )/(1+ cos theta + sin theta )=x, find the value of (1- cos theta + sin theta )/(1+ sin theta )

If x =a ( theta + sin theta), y =a (1 - cos thea) then (d ^(2) y)/(dx ^(2)) at theta = (pi)/(4) is

If x = cos theta (1 + cos theta ), y = sin theta (1 + cos theta ) show that ((dy)/(dx)) _(theta = ( pi )/(2)) =1.

VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-COMPLEX NUMBERS-EXERCISE -1 (B)
  1. Find the square root of the following complex number: -8-6i

    Text Solution

    |

  2. Find a square root for the complex numbers. (3+4i)

    Text Solution

    |

  3. Find a square root for the complex numbers. (-47+i8 sqrt(3))

    Text Solution

    |

  4. Find the multiplicative inverse of the complex numbers. sqrt(5)+3i

    Text Solution

    |

  5. Find the multiplicative inverse of the complex numbers. -i

    Text Solution

    |

  6. Find the multiplicative inverse of the complex numbers. i^(-35)

    Text Solution

    |

  7. If (a+ib)^(2)=x+iy, find x^(2)+y^(2)

    Text Solution

    |

  8. If x+iy=3/(2+costheta +i sin theta), then show that x^2+y^2=4x-3

    Text Solution

    |

  9. If x+iy=(1)/(1+ cos theta+ isin theta), show that 4x^(2)-1=0

    Text Solution

    |

  10. If u+iv=(2+i)/(z+3) and z=x+iy find u, v

    Text Solution

    |

  11. If z=3-5i Show that z^(3)-10z^(2)+58z-136=0

    Text Solution

    |

  12. If z=2-isqrt(7), then show that 3z^(3)-4z^(2)+z+88=0

    Text Solution

    |

  13. Show that (2-i)/((1-2i)^(2)) and ((-2-11 i)/(25)) are conjugate to eac...

    Text Solution

    |

  14. (x+iy)^(1/3) =(a+ib) then prove that (x/a+y/b)=4(a^2-b^2)

    Text Solution

    |

  15. Write ((a+ib)/(a-ib))^(2)-((a-ib)/(a+ib))^(2) in the fom of x+iy

    Text Solution

    |

  16. If x and y are real numbers of such that ((1+i)x-2i)/(3+i)+((2-3i)y+i...

    Text Solution

    |

  17. Find the least positive integer n foe which ((1+i)/(1-i))^(n)=1.

    Text Solution

    |

  18. If ((1+i)/(1-i))^3-((1-i)/(1+i))^3=x+i y ,\ fin d\ (x , y)

    Text Solution

    |

  19. Find the value of theta if (3+2isintheta)//(1-2isintheta) is purely re...

    Text Solution

    |

  20. Find the real values of x and y if (x-1)/(3+1)+(y-1)/(3-i)=i

    Text Solution

    |