Home
Class 11
MATHS
The value of (cos2^@ + sin2^@)/(cos2^@-...

The value of `(cos2^@ + sin2^@)/(cos2^@-sin2^@)`is ___

A

a)`tan47^@`

B

b)`tan43^@`

C

c)`tan2^@`

D

d)`cot2^@`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • SETS,FUNCTIONS AND CALCULUS

    UNITED BOOK HOUSE|Exercise EXERCISE|18 Videos

  • Taki House Govt. Sponsored Girls High School, Question Paper

    UNITED BOOK HOUSE|Exercise Exercise |24 Videos

Similar Questions

Explore conceptually related problems

Show that (cos2^@-sin2^@)/(cos2^@+sin2^@)=tan43^@

Prove that, tan43^(@) = (cos2^(@) - sin2^(@))/(cos2^(@) + sin2^(@))

Find the value of (2 sin^2 63^@+1+2sin^2 27^@)/(3cos^2 17^@-2+3cos^2 73^@)

Find the value of cos^2 48^@-sin^2 12^@

If A+C=2b, then the value of (cos C - cos A)/(sin A-sin C) is-

Write True or False : Value of (sin43^@ cos 47^@+ cos43^@sin 47^@) is 2.

If cos^2 alpha - sin^2 alpha = tan^2 beta , then the value of (cos^2 beta - sin^2 beta) is____

Find the value of cos^2 30^@-2cos^2 60^@-4sin^2 45^@+tan45^@ .

The minimum value of 2^(sin x) + 2^(cos x) is

The value of ("sin"^(-1)(1)/(2)+2"cos"^(-1)(1)/(2)) is -

UNITED BOOK HOUSE-TAKI HOUSE-EXERCISE
  1. If sin theta=4/5and theta=positive acute angle then the value of tan2t...

    Text Solution

    |

  2. The greatest value of 3costheta+4sintheta+15is

    Text Solution

    |

  3. The value of (cos2^@ + sin2^@)/(cos2^@-sin2^@)is

    Text Solution

    |

  4. The value of sin200^@+cos200^@is

    Text Solution

    |

  5. If x=t+(1/t), y=t-(1/t) and t=parameter then the locus of the point (x...

    Text Solution

    |

  6. The distance between the two straight lines 3x+4y-9=0 and 6x+8y-15=0 i...

    Text Solution

    |

  7. if the Pth term of an A.P. is q and qth term is P.Then show that the n...

    Text Solution

    |

  8. Find the value of ((1+sqrt-3)/2)^100+((1-sqrt-3)/2)^100

    Text Solution

    |

  9. If alphaand beta be two roots of the equation (x-a)(x-b)=c then show t...

    Text Solution

    |

  10. Evaluate :cos^2(pi/8)+cos^2((3pi)/8)+cos^2((5pi)/8)+cos^2((7pi)/8)

    Text Solution

    |

  11. If cosalpha+cosbeta=2/3and sinalpha+sinbeta=2/5then find the vvalue of...

    Text Solution

    |

  12. If cosec theta+sectheta=cosecalpha+secalpha,then show that tan ((theta...

    Text Solution

    |

  13. x=2cost+3y=2sint+5 and t=parameter find the locus of the point (x,y)

    Text Solution

    |

  14. Find the equations of a straight line parallel to x-axis and passes th...

    Text Solution

    |

  15. Prove by mathematical induction ,3^(2n+1)+2^(n+2)is divisible by 7,n i...

    Text Solution

    |

  16. Factorise:x^2+y^2+z^2-xy-yz-zx

    Text Solution

    |

  17. Solve :2y^2+3y+8-6i=0

    Text Solution

    |

  18. The sum of first three terms of an arithmetic progression with n terms...

    Text Solution

    |

  19. Show that sqrt3/(sin20^@)-1/(cos20^@)=4

    Text Solution

    |

  20. If tan(alpha+beta)=a+b and tan(alpha-beta)=a-b then show that atanalph...

    Text Solution

    |