Home
Class 12
MATHS
The value of cos^(2)10^(@)-cos10^(@) cos...

The value of `cos^(2)10^(@)-cos10^(@) cos 50^(@) + cos^(2) 50^(@)` is

A

`(3)/(4)+ cos20^(@)`

B

`3//4`

C

`(3)/(2)(1+cos20^(@))`

D

`3//2`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • INVERSE TRIGONOMETIC FUNCTIONS

    DISHA PUBLICATION|Exercise EXERCISE - 2: (CONCEPT APPLICATOR)|30 Videos
  • LIMITS AND DERIVATIVES

    DISHA PUBLICATION|Exercise Exercise -2 : Concept Applicator|30 Videos

Similar Questions

Explore conceptually related problems

The value of cos^(2)10^(0)-cos10^(0)cos50^(@)+cos^(2)50^(@) is equal to (4)/(3)(b)(1)/(3)(c)(3)/(4)(d)3

The value of cos10^(@)-sin 10^(@) is

The value of cos10^(@)-sin10^(@) is

The value of cos10^(@)-sin10^(@) is

Find the value of 8 cos10^(@)cos20^(@)cos40^(@) .

DISHA PUBLICATION-JEE MAIN - 2019 (HELD ON: 9TH APRIL 2019(MORNING SHIFT))-MCQs
  1. If the tangent to the curve, y = x^(3) + ax -b at the point (1, -5) i...

    Text Solution

    |

  2. The value of int(0)^(n//2)(sin^(3)x)/(sinx+cos x) dx is

    Text Solution

    |

  3. The value of cos^(2)10^(@)-cos10^(@) cos 50^(@) + cos^(2) 50^(@) is

    Text Solution

    |

  4. If the line y = mx + 7 sqrt(3) is normal to the hyperbola (x^(2))/(...

    Text Solution

    |

  5. The solution of the differential equation x(dy)/(dx) + 2y = x^...

    Text Solution

    |

  6. For any two statements p and q, the negation of the expression p vee (...

    Text Solution

    |

  7. All the points in the set S={(alpha+i)/(alpha-i):alpha in R } (i= sqrt...

    Text Solution

    |

  8. If the fourth term in the binomial expansin of ((2)/(x) + x^(log(6) x)...

    Text Solution

    |

  9. If the function f defined on (pi/6,pi/3) by {{:((sqrt2 cos x -1)/(cot ...

    Text Solution

    |

  10. If the function f: R -{1,-1} to A definded by f(x)=(x^(2))/(1-x^(2)), ...

    Text Solution

    |

  11. A plane passing through the points (0, -1, 0) and (0, 0, 1) and making...

    Text Solution

    |

  12. Let the sum of the first n terms of a non-constant A.P., a(1), a(2), a...

    Text Solution

    |

  13. Let S = { theta in [-2pi,2pi]:2 cos^(2) theta + 3 sin theta = 0}, the...

    Text Solution

    |

  14. If one root of the quadratic equation X^(2)+px+q=0 is 2-sqrt(3) : wher...

    Text Solution

    |

  15. Let f(x) = 15 -|x-10|, x in R. Then, the set of all values of x, at w...

    Text Solution

    |

  16. Let S be the set of all values of x for which the tangent to the curve...

    Text Solution

    |

  17. If a tangent to the circle x^(2)+y^(2)=1 intersects the coordinate axe...

    Text Solution

    |

  18. Let vecalpha = 3hati + hatj and beta= 2hati - hatj + 3hatk. If vecbeta...

    Text Solution

    |

  19. The area (in sq units) of the region A={(x,y): x^(2) le y le x +2} is

    Text Solution

    |

  20. If [{:(1, 1), (0,1):}]*[{:(1, 2), (0,1):}]*[{:(1, 3), (0,1):}]cdotcdot...

    Text Solution

    |