Home
Class 11
MATHS
At x= (5pi)/(6), the value of 2 sin 3x+ ...

At `x= (5pi)/(6),` the value of `2 sin 3x+ 3 cos 3x ` is

A

0

B

1

C

`-1`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES

    TARGET PUBLICATION|Exercise EVALUATION TEST|12 Videos
  • TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES

    TARGET PUBLICATION|Exercise CRITICAL THINKING|60 Videos
  • STRAIGHT LINE

    TARGET PUBLICATION|Exercise EVALUATION TEST|10 Videos
  • TRIGONOMETRIC FUNCTIONS

    TARGET PUBLICATION|Exercise EVALUATION TEST|10 Videos

Similar Questions

Explore conceptually related problems

At x=5(pi)/(6) then the value of 2sin x+3cos3x is

(i) if sin x= (1)/(3) find the value of sin 3x (ii) if cos x= (1)/(2) , find the value of cos 3x

At x = (5pi)/(6), f(x)= 2sin 3x+3 cos 3x is

If cos x=(-3)/(5) " and " pi lt x lt .(3pi)/(2) find the value of (i) "sin 2x "" ""(ii) cos 2x "" ""(iii) tan 2x "

If tanx = 3/2 , then the value of (3 sin x + 2 cos x)/(3 sin x - 2cos x) is:

" If "sin^(2)x+sin x cos x-6cos^(2)x=0" and "-(pi)/(2)ltxlt0," then value of "cos2x" is " -3/5 3/5 -4/5 4/5

If x = 7.5^(@) then find the value of (cos x - cos 3x)/(sin 3x - sin x)

3sin x+5cos x=5 then find the value of 5sin x-3cos x

TARGET PUBLICATION-TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES -COMPETITIVE THINKING
  1. The valur of sin 1^(@)+ sin 2^(@)+…+ sin 359^(@) is equal to

    Text Solution

    |

  2. The value of sin 600^(@) cos 330^(@)+ cos 120^(@) sin 150^(@) is

    Text Solution

    |

  3. At x= (5pi)/(6), the value of 2 sin 3x+ 3 cos 3x is

    Text Solution

    |

  4. (1- tan 2 ^(@) cot 62^(@))/(tan 152^(@) -cot 88^(@))=

    Text Solution

    |

  5. (cos 12^(@) - sin 12^(@))/(cos 12^(@) + sin 12) + (sin 147^(@))/(cos 1...

    Text Solution

    |

  6. If tan 20^(@) =lamda, then (tan 160^(@) -tan 110^(@))/(1+ (tan 160^(@)...

    Text Solution

    |

  7. sin^2 17. 5^(@)+sin^2 72. 5^(@) is equal to

    Text Solution

    |

  8. Find the value of the expression 3[sin^(4)((3pi)/(2)-alpha)+sin^(4)(...

    Text Solution

    |

  9. sin^(2)5^@+sin^(2)10^@+sin^(2)15^@ +.......+sin^(2)85^@ + sin^(2)90^@=

    Text Solution

    |

  10. cos 15^(@)

    Text Solution

    |

  11. Which one of the following number (s) is/are rational?

    Text Solution

    |

  12. The vlaue of 1/8(3-4cos 2 theta + cos 4 theta) is

    Text Solution

    |

  13. If 0 lt x lt (pi)/(4), then sec 2x - tan 2x=

    Text Solution

    |

  14. sqrt3 cosec 20^(@) -sec 20^(@)= (sqrt3)/(sin(20^(@)))-(1)/(cos (20^(...

    Text Solution

    |

  15. The value of tan (1^0) + tan(89^0) is

    Text Solution

    |

  16. If cot ""(2x)/(3) + tan (x/3) = cosec (kx)/(3), then the value of k is

    Text Solution

    |

  17. If 2 sin^(2) ((pi//2) cos^(2) x)=1-cos (pi sin 2x), x ne (2n + 1) pi//...

    Text Solution

    |

  18. If 8cos2theta+8sec2theta=65,0ltthetaltpi/2, then the value of 4cos4the...

    Text Solution

    |

  19. If 5(tan^2x - cos^2x)=2cos 2x + 9, then the value of cos4x is

    Text Solution

    |

  20. x+1/x=2cosalpha then x^n+1/x^n=

    Text Solution

    |