Home
Class 11
MATHS
Evaluate the following limit: (lim)(thet...

Evaluate the following limit: `(lim)_(theta->0)(1-cos4theta)/(1-cos6theta)`

Text Solution

Verified by Experts

`(lim)_(theta->0)(1-cos4theta)/(1-cos6theta)`

L'Hopital Rule:

`lim_(x rightarrow b) (f(x))/(g(x))=lim_(x rightarrow b) (f'(x))/(g'(x))`

`(lim)_(theta->0)(4sin4theta)/(6sin6theta)`

We know,

`(lim)_(x->0) (sin x)/(x)=1`

`(lim)_(theta->0)(4*4theta*1)/(6*6theta*1)`

`(lim)_(theta->0)(16theta)/(36theta)=4/9`

...
Promotional Banner

Topper's Solved these Questions

  • INTRODUCTIONS TO 3-D COORDINATE GEOMETRY

    RD SHARMA|Exercise Solved Examples And Exercises|114 Videos
  • LINEAR INEQUATIONS

    RD SHARMA|Exercise Solved Examples And Exercises|163 Videos

Similar Questions

Explore conceptually related problems

Evaluate the following : lim_(theta to 0)(1-costheta)/(1-cos3theta)

Evaluate the following limit: (lim)_(theta rarr0)(s in4 theta)/(tan3 theta)

Evaluate the following limit: (lim)_(theta rarr0)(sin3 theta)/(tan2 theta)

lim_(thetato0)(1-cos4theta)/(1-cos6theta) is equal to

Evaluate the following limits : lim_(theta to 0)((cosectheta-cottheta)/(theta))

1+cos2 theta+cos4 theta+cos6 theta=

lim_ (e-> 0) (sqrt (1-cos theta)) / (theta)

Prove each of the following identities : (i) (1+ cos theta + sin theta)/(1+ cos theta - sin theta) =(1+ sin theta)/(cos theta) (ii) (sin theta + 1- cos theta)/(cos theta - 1 + sin theta) = (1+ sin theta)/(cos theta)

4cos6 theta cos4 theta cos2 theta=

Prove the following identities: 2(sin^(6)theta+cos^(6)theta)-3(sin^(4)theta+cos^(4)theta)+1=0sin^(6)theta+cos^(6)theta+3sin^(2)theta cos^(2)theta=1(sin^(8)theta-cos^(8)theta)=(sin^(2)theta-cos^(2)theta)(1-2sin^(2)theta cos^(2)theta)

RD SHARMA-LIMITS-All Questions
  1. Evaluate the following limit: lim(x->0)(cos e c x-cot x)

    Text Solution

    |

  2. Evaluate the following limit: (lim)(x->0)(x\ cos x-sin x)/(x^2+t a n x...

    Text Solution

    |

  3. Evaluate the following limit: (lim)(theta->0)(1-cos4theta)/(1-cos6thet...

    Text Solution

    |

  4. Evaluate the following limit: (lim)(theta->0)(sin4theta)/(ta n 3theta)

    Text Solution

    |

  5. Evaluate the following limit: (lim)(x->0)(1-cos5x)/(1-cos6x)

    Text Solution

    |

  6. Evaluate the following limit: (lim)(x->0)(sin3x+7x)/(4x+sin2x)

    Text Solution

    |

  7. Evaluate the following limit: (lim)(x->0)(3sin x-sin3x)/(x^3)

    Text Solution

    |

  8. Evaluate the following limit: (lim)(x->0)(sin ax+bx)/(a x+sin bx)

    Text Solution

    |

  9. Evaluate: lim(h->0)((a+h)^2sin(a+h)-a^2sina)/h

    Text Solution

    |

  10. If (lim)(x->0)k x\ cosec\ x=(lim)(x->0) xcosec\ k x , find k

    Text Solution

    |

  11. Evaluate: (lim)(x->pi/2)(cot x)/(pi/2-x)

    Text Solution

    |

  12. Evaluate: (lim)(x->pi/2)(pi/2-x)t a n x

    Text Solution

    |

  13. (lim)(x->pi/2)(tan2x)/(x-pi/2)

    Text Solution

    |

  14. Evaluate the following limits: lim(x->pi/2)(pi/2-x)tanx

    Text Solution

    |

  15. Evaluate the following limit: lim(x->pi/2)(cos^2x)/(1-sin x)

    Text Solution

    |

  16. Evaluate the following limit: (lim)(x->a)(cos x-cos a)/(x-a)

    Text Solution

    |

  17. Evaluate the following limit: (lim)(x->pi/2)(1-sin x)/((pi/2-x)^2)

    Text Solution

    |

  18. Evaluate the following limit: (lim)(x->pi/8)(cot4x-cos4x)/((pi-8x)^3)

    Text Solution

    |

  19. Evaluate the following limit: (lim)(x->pi)(sqrt(5+cos x)-2)/((pi-x)^2)

    Text Solution

    |

  20. Evaluate the following limit: (lim)(x->a)(sin sqrt(x)-sin sqrt(a))/(x-...

    Text Solution

    |