Home
Class 11
MATHS
Find sinfrac(x)(2), cosfrac(x)(2) and ta...

Find `sinfrac(x)(2), cosfrac(x)(2)` and `tanfrac(x)(2)` in the following:- `sin x=1/4`, x in quadrant II

Promotional Banner

Topper's Solved these Questions

  • TRIGNOMETRY

    MODERN PUBLICATION|Exercise EXERCISE|730 Videos

  • STRAIGHT LINES

    MODERN PUBLICATION|Exercise EXERCISE|304 Videos

Similar Questions

Explore conceptually related problems

Find sinfrac(x)(2), cosfrac(x)(2) and tanfrac(x)(2) in the following:- cos x= -1/3 , x in quadrant III

Find sinfrac(x)(2), cosfrac(x)(2) and tanfrac(x)(2) in the following:- tan x = -4/3 , x in quadrant II

Prove the following: sin^2 6x-sin^2 4x = sin 2x sin 10x

Find the derivatives of the following : x^3sin x + 2x cos x-2x sin x .

Find dy/dx in the following: y=sin^-1((1 - x^2)/(1+x^2), 0

Prove the following: cos^2 2x - cos^2 6x = sin 4x sin 8x

Evaluate the following integrals: int (2x+1)sin x dx .

Prove the following: (sin x-sin y)/(cosx + cos y)=tanfrac(x-y)(2)

Prove the following: sin2 x + 2 sin 4x + sin 6x = 4 cos^2 x sin 4x

Prove the following: 3sin^–1 x = sin^–1 (3x – 4x^3), x in [–1/2 , 1/2]

MODERN PUBLICATION-TRIGNOMETRY-EXERCISE
  1. Find sinfrac(x)(2), cosfrac(x)(2) and tanfrac(x)(2) in the following:-...

    Text Solution

    |

  2. Find sinfrac(x)(2), cosfrac(x)(2) and tanfrac(x)(2) in the following:-...

    Text Solution

    |

  3. Find sinfrac(x)(2), cosfrac(x)(2) and tanfrac(x)(2) in the following:-...

    Text Solution

    |

  4. If tan frac (x)(2)= m/n, prove than m sin x+n cos x=n.

    Text Solution

    |

  5. If tan theta =a/b, prove that a sin 2 theta+b cos 2 theta=b.

    Text Solution

    |

  6. Prove that (cos^3 theta -cos 3 theta)/(cos theta)+ (sin^3 theta+sin3 t...

    Text Solution

    |

  7. Evaluate : sin frac (3 pi)(8).

    Text Solution

    |

  8. Evaluate : sin frac (5 pi)(24).

    Text Solution

    |

  9. Evaluate : tan frac (pi)(8).

    Text Solution

    |

  10. Prove that : sin^4 frac (pi)(8)+ sin^4 frac (3pi)(8)+sin^4 frac (5pi)...

    Text Solution

    |

  11. Prove that : sqrt((1-cos frac (5pi)(3))/2) =1/2.

    Text Solution

    |

  12. Prove that : sin^2 6x-sin^2 4x= sin 2x sin 10x.

    Text Solution

    |

  13. Prove the following: cos^2 2x - cos^2 6x = sin 4x sin 8x

    Text Solution

    |

  14. Find sin 7 1^@/2, cos 7 1^@/2 and tan 11 1^@/4.

    Text Solution

    |

  15. Prove that : tan 142 1^@/2 =2+sqrt2-sqrt3-sqrt6.

    Text Solution

    |

  16. If theta be any real, prove that : cos4 theta=1-8 sin^2 theta cos^2 t...

    Text Solution

    |

  17. If theta be any real, prove that : sin5 theta= 5sin theta-20 sin^3 the...

    Text Solution

    |

  18. Prove the following: cot x cot 2x -cot 2x cot 3x -cot 3x cot x = 1

    Text Solution

    |

  19. Prove that: sin 3x + sin 2x -sin x = 4sin x cosfrac(x)(2)cosfrac(3x)(2...

    Text Solution

    |

  20. Prove that: (sin 3x + sin x) sin x + (cos 3x -cos x) cos x = 0

    Text Solution

    |