Home
Class 11
MATHS
If A lies in the third quadrant and 3 ta...

If A lies in the third quadrant and `3 tan A-4 = 0,` then `5 sin 2A + 3sinA + 4 cosA` is equal to

A

`0`

B

`(-24)/(5)`

C

`(24)/(5)`

D

`(48)/(5)`

Text Solution

Verified by Experts

The correct Answer is:
A
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

If A lies in the third quardrant and 3 tan A -4 =0 , then 5 sin 2A+3 sin A + 4 cos A is equal to

If A lies in the third quadrant and 3 tan A-4=0, then 5sin2A+3sin A+4cos A is equal to

If A lies in the third quadrant and tan A=(4)/(3) then find the value of sin A+cos A

If A lies in the first quadrant and 6 tan A=5, then the value of ( 8 sin A - 4 cos A )/( cos A + 2 sin A) is :

If A lies in second quadrant and 3tan A+4=0, then the value of 2cot A-5cos A+sin A is equal to -53/10 (b) 23/1037/10(d)7/10

If A lies in the third quadrant, and 20tanA = 21, then the value of (5 sin A-2 cos A)/(4cosA-5/7 sinA) is: यदि A तीसरे चतुर्थाश में स्थित है तथा 20tanA= 21 है, तो (5 sin A-2 cos A)/(4cosA-5/7 sinA) का मान क्या होगा ?

TARGET PUBLICATION-TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES -COMPETITIVE THINKING
  1. x+1/x=2cosalpha then x^n+1/x^n=

    Text Solution

    |

  2. If sin x + cos x = 1/5, then tan 2x is

    Text Solution

    |

  3. If A lies in the third quadrant and 3 tan A-4 = 0, then 5 sin 2A + 3si...

    Text Solution

    |

  4. If a tan theta = b, then a cos 2 theta+ b sin 2 theta =

    Text Solution

    |

  5. If a cos 2 theta + b sin 2 theta =c has alpha and beta as its solut...

    Text Solution

    |

  6. If alpha, beta are solutin of 6 cos theta + 8 sin theta=9, then sin (...

    Text Solution

    |

  7. If alpha is a root of 25cos^2theta+5costheta-12=0,pi/2ltalphaltpi the ...

    Text Solution

    |

  8. 2 cos ^(2) theta - 2 sin ^(2) theta =1, then theta =

    Text Solution

    |

  9. 2 sin A cos ^(3) A-2 sin ^(3) A cos A=

    Text Solution

    |

  10. sin^4\ pi/8 + sin^4\ (3pi)/8 + sin^4\ (5pi)/8 + sin^4\ (7pi)/8=

    Text Solution

    |

  11. 3(sin x- cos x )^(4) + 6(sin x+ cos x )^(2) +4 (sin ^(6) x+ cos ^(6) x...

    Text Solution

    |

  12. If sin 2 theta + sin 2 phi =1/2 and cos 2 theta + cos 2 phi =3/2, then...

    Text Solution

    |

  13. If n=1,2,3,......., then cosalphacos2alphacos4alpha.......cos2^(n-1)a...

    Text Solution

    |

  14. cos ""(2pi)/( 15) cos ""(4pi)/(15) cos ""(8pi)/(15) cos ""(16pi)/(15)=

    Text Solution

    |

  15. If K=sin(pi/(18))sin((5pi)/(18))sin((7pi)/(18)), then the numerical va...

    Text Solution

    |

  16. The value of sinpi/(14)sin(3pi)/(14)sin(5pi)/(14)sin(7pi)/(14)sin(9pi)...

    Text Solution

    |

  17. The value of sin ""31/3pi is

    Text Solution

    |

  18. Find the value tan (pi/5)+2tan((2pi)/5)+4cot((4pi)/5).

    Text Solution

    |

  19. The valur of (cot x- tan x)/(cot 2x) is

    Text Solution

    |

  20. (sec 8 A-1)/( sec 4A-1)=

    Text Solution

    |