Home
Class 11
MATHS
If A=[1ta n x-t a n x1],t h e nA^T A^(-1...

If `A=[1ta n x-t a n x1],t h e nA^T A^(-1)` is `[ cos2x s in2x-s in2x cos2x]` b. `[cos2x-s in2x s in2x cos2x]` c. `[cos2x cos2x cos2x s in2x]` d. none of these

Promotional Banner

Topper's Solved these Questions

  • TRIGNOMETRIC RATIOS AND IDENTITIES

    ALLEN|Exercise All Questions|1 Videos
  • TRIGONOMETRIC RATIOS AND IDENTITIES

    ALLEN|Exercise All Questions|136 Videos

Similar Questions

Explore conceptually related problems

If A=[1tan x-tan x1], show that A^(T)A^(-1)=[cos2x-sin2x sin2x cos2x]

If A=[[1,tan x-tan x,1]], show that A^(T)A^(-1)=[[cos2x,-sin2xsin2x,cos2x]]

(d)/(dx)[(1+cos2x+sin2x)/(1+sin2x-cos2x)]=

6tan^(2)x-2cos^(2)x=cos2x if cos2x=

(cos2x-1)cot^(2)x=-3sin x

Prove that: 1+cos2x+cos4x+cos6x=4cos x cos2x cos3x

(1+sin x+cos x+sin2x+cos2x)/(tan2x)=0

If cos2x+2cos x=1 then sin^(2)x(2-cos^(2)x) is

If cos2x+2cos x=1 then sin^(2)x(2-cos^(2)x) is

int(sin2x)/((1-cos2x)(2-cos2x))dx=

ALLEN-TRIGONOMETRIC EQUATION-All Questions
  1. Find the principal solution of the trigonometric equation sqrt(cot3x +...

    Text Solution

    |

  2. Solve : 2sin(3x+pi/4)=sqrt(1+8sin2x*cos^2 2x)

    Text Solution

    |

  3. If A=[1ta n x-t a n x1],t h e nA^T A^(-1) is [ cos2x s in2x-s in2x cos...

    Text Solution

    |

  4. Solve : (log)((-x^2-6x)//10)(sin3x+sinx)=(log)(-x^2-6x)//10)(sin2x)

    Text Solution

    |

  5. The values of k for which the equation sin^4 x+cos^4 x+sin2x+k=0 posse...

    Text Solution

    |

  6. Find the least positive angle measured in degrees satisfy sin^3x +sin^...

    Text Solution

    |

  7. Solve for x,y:{sinxcosy=1/4 , 3tanx=tany

    Text Solution

    |

  8. The number of solutions of equation tanx+secx=2cosx lying in the inter...

    Text Solution

    |

  9. General solution of tan5theta=cot2theta is (npi)/7+pi/2^(\ ),\ n Z b....

    Text Solution

    |

  10. The number of values of x in the interval [0, 3pi] satisfying the equa...

    Text Solution

    |

  11. If 0ltxltpi and cosx + sinx =1/2 , then tanx is (1) ...

    Text Solution

    |

  12. If cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+singamma, then which...

    Text Solution

    |

  13. The possible values of theta in (0,pi) such that sin (theta) + sin (4t...

    Text Solution

    |

  14. If 0 <= x < 2pi, then the number of real values of x, which satisfy th...

    Text Solution

    |

  15. The number of x in [0,2pi] for which sqrt(2sin^4 x+18cos^2 x)-sqrt(2...

    Text Solution

    |

  16. The number of integral values of k for which the equation 7cos x +5 s...

    Text Solution

    |

  17. cos(alpha-beta)=1a n dcos(alpha+beta)=l/e , where alpha,betamu in [-pi...

    Text Solution

    |

  18. The value of theta in (0,2pi) for which 2sin^2theta-5sintheta+2>0 is (...

    Text Solution

    |

  19. The number of solutions of the pair of equations 2s in^2theta-cos2thet...

    Text Solution

    |

  20. The number of values of theta in the interval (-pi/2,pi/2) such that t...

    Text Solution

    |