Home
Class 12
MATHS
If cos x + cos y- cos(x +y) = 3/2 then x...

If `cos x + cos y- cos(x +y) = 3/2` then x=y is possible.

Promotional Banner

Topper's Solved these Questions

  • Circular Functions, Identities

    A DAS GUPTA|Exercise Exercise|300 Videos

  • Circles

    A DAS GUPTA|Exercise EXERCISE|122 Videos

  • COMPLEX NUMBERS

    A DAS GUPTA|Exercise EXERCISE|224 Videos

Similar Questions

Explore conceptually related problems

If cos x+cos y-cos(x+y)=(3)/(2), then (a) x+y=0( b) x=2y( c) x=y( d )2x=y

If cos(x-y)=1 then cos x+cos y=

If cos x+cos y=(3)/(2)+cos(x+y) then for n in I

If cos(x -y) , cos x and cos(x + y) are in HP then cos x* sec (y/2) = ________.

If cos x.cos y + sin x.sin y = -1 then cos x + cos y is यदि cos x.cos y + sin x.sin y = -1 हो, तो cos x + cos y का मान क्या होगा?

A DAS GUPTA-Circular Functions, Identities -Exercise
  1. If a1 +a2cos 2x + a3sin^(2)x = 0 be true for all x then a1, a2 and a3...

    Text Solution

    |

  2. The maximum value of 5cos theta + 12 sin theta is 17. Given statement ...

    Text Solution

    |

  3. If cos x + cos y- cos(x +y) = 3/2 then x=y is possible.

    Text Solution

    |

  4. If x = rsin theta*cos phi, y = rsin theta*sin phi and z = rcos theta ...

    Text Solution

    |

  5. The minimum value of 3cos x + 4sin x + 5 is 0. Given statement is true...

    Text Solution

    |

  6. tan 22 1^circ/2 is a root of the equation - (1+x^(2))/(1- x^(2)) = sq...

    Text Solution

    |

  7. If tan theta= 2 is satisfied by alpha, beta then the value of frac{tan...

    Text Solution

    |

  8. Prove that sin 1^circ lt sin 1.

    Text Solution

    |

  9. If sin alpha = -3/5,pi lt alpha lt 3pi/2 then cos alpha/2 = 1/sqrt10

    Text Solution

    |

  10. In the following incomplete sentences fill in the blanks such that the...

    Text Solution

    |

  11. If sin 17^circ *sin 43^circ *sin 77^circ = lambda sin 51^circ then lam...

    Text Solution

    |

  12. In the following incomplete sentences fill in the blanks such that the...

    Text Solution

    |

  13. In the following incomplete sentences fill in the blanks such that the...

    Text Solution

    |

  14. In the following incomplete sentences fill in the blanks such that the...

    Text Solution

    |

  15. If un = 2cos n theta then u1un - u(n-1) is equal to

    Text Solution

    |

  16. If frac {x}{cos theta} = frac {y}{cos(theta -(2pi)/3)} = frac {z}{co...

    Text Solution

    |

  17. If cos alpha + cos beta + cos gamma = 0 then cos 3alpha + cos 3beta + ...

    Text Solution

    |

  18. tan 40^circ + 2tan 10^circ is equal to

    Text Solution

    |

  19. A factor of cos 4theta - cos 4phi is

    Text Solution

    |

  20. The chord AB of a circle subtends an angle of frac {2pi}{3} at a point...

    Text Solution

    |