Home
Class 11
MATHS
If tanx=(b/a), then acos2x+bsin2x is equ...

If tanx=(b/a), then acos2x+bsin2x is equal to

A

a

B

b

C

a/b

D

b/a

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS

    PATHFINDER|Exercise QUESTION BANK|68 Videos

  • TRIGONOMETRIC RATIOS OF COMPOUND ANGLES

    PATHFINDER|Exercise QUESTIONBANK|25 Videos

Similar Questions

Explore conceptually related problems

If tan x =b/a, then the value of (a cos 2x+ b sin 2x) is equal to-

If tanx=(2b)/(a-c) , (a ne c) y=acos^2x+2bsinxcosx+csin^2x and z=asin^2x-2bsinxcosx+c cos^2x then

Let g(x)={(x^2+xtanx-xtan2x)/(a x+tanx-tan3x),x!=0 0,x=0 If g^(prime)(0) exists and is equal to nonzero value b , then 52 b/a is equal to _____

The value of int_(0)^(pi) (x)/(a^(2)cos^(2)x+b^(2)sin^(2)x)dx is equal to -

If the integral int(5tanx)/(tanx-2)dx=x+aInabs(sinx-2cosx)+k , then a is equal to

inte^x((2tanx)/(1+tanx)+cot^2(x+pi/4))dx is equal to (a) e^xtan(pi/4-x)+c (b) e^xtan(x-pi/4)+c (c) e^xtan((3pi)/4-x)+c (d) none of these

If y=a x^(n)+b x^(-n) ,then x^2(d^2y)/(dx^2) is equal to

If int(dx)/(cos^(3)xsqrt(2sin2x))=(tanx)^(A)+C(tanx)^(B)+K where K is a constant of integration, then A+B+C is equal to

If lim_(x rarr 0)(((a-n)nx-tanx)sinnx)/x^2=0 , where n is non zero real number, then a is equal to:

PATHFINDER-TRIGONOMETRIC RATIOS AND IDENTITIES-QUESTION BANK
  1. If m and M be the minimum and maximum value of 10 cos^2x-6sinxcosx+2si...

    Text Solution

    |

  2. 3(sinx-cosx)^4+6(sinx+cosx)^2+4(sin^6x+cos^6x) is equal to

    Text Solution

    |

  3. If tanx=(b/a), then acos2x+bsin2x is equal to

    Text Solution

    |

  4. tan9^@-tan27^@-tan63^@+tan81^@ is equal to

    Text Solution

    |

  5. (1+sintheta-costheta)/(1+sintheta+costheta)=

    Text Solution

    |

  6. The number of ordered pairs (alpha,beta), where alpha,betain(-pi,pi) s...

    Text Solution

    |

  7. The number of solutions of the equation x/100=sinx is

    Text Solution

    |

  8. If mtan(theta-30^@)=ntan(theta+120^@), then cos2theta is equal to

    Text Solution

    |

  9. The equation cos2x+asinx=2a-7 possessses a solution if

    Text Solution

    |

  10. (sin5theta+sin2theta-sintheta)/(cos5theta+2cos3theta+2cos^2theta+costh...

    Text Solution

    |

  11. If 4nalpha=pi, thencotalpha cot2alpha cot3alpha.... cot(2n-1)alpha is ...

    Text Solution

    |

  12. If thetane(2n+1)pi/2. ninI, then the least value of (sintheta+cosecthe...

    Text Solution

    |

  13. If sinx+sin^2x=1n then the value of cos^12x+3cos^10x+3cos^8x+cos^6x-1 ...

    Text Solution

    |

  14. If "coses"theta-sintheta=m,sectheta-costheta=n,"eliminate"theta

    Text Solution

    |

  15. Find the value of (1+cos (pi/8))(1+cos(3pi/8))(1+cos(5pi/8))(1+cos(7pi...

    Text Solution

    |

  16. (cos^4(pi/8))+(cos^4((3pi)/8))+(cos^4((5pi)/8))+(cos^4((7pi)/8)) is

    Text Solution

    |

  17. The value of underset(r=1)overset9sum sin^2(rpi)/18=

    Text Solution

    |

  18. If A+B+C=(3pi)/2, then cos2A +cos2B+cos2C is

    Text Solution

    |

  19. The number of points of intersection of 2y=1 and y=sinx, -2pilexle2pi

    Text Solution

    |

  20. If sinalpha, sinbeta and cosalpha are in G.P. then roots of the equati...

    Text Solution

    |