Home
Class 14
MATHS
If alpha be an acute angle asinalpha-bco...

If `alpha` be an acute angle `asinalpha-bcosalpha=0` ,what will be the values of `sinalphaandcosalpha` in terms of and b ?

A

`(b)/(sqrt(a^(2)+b^(2))),(a)/(sqrt(a^(2)+b^(2)))`

B

`(-b)/(sqrt(a^(2)+b^(2))),(a)/(sqrt(a^(2)+b^(2)))`

C

`(b)/(sqrt(a^(2)+b^(2))),(-a)/(sqrt(a^(2)+b^(2)))`

D

`(b^(2))/(sqrt(a^(2)+b^(2))),(a^(2))/(sqrt(a^(2)+b^(2)))`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRY

    KIRAN PUBLICATION|Exercise TYPE -V|45 Videos

  • TIME AND WORK

    KIRAN PUBLICATION|Exercise TEST YOURSELF|25 Videos

Similar Questions

Explore conceptually related problems

alpha is an acute angle. (sin alpha + cos alpha ) is

If alpha is an acute angle and 2sinalpha+15cos^(2)alpha=7 then the value of cotalpha is

If alpha is a positive acute angle and 2sin alpha+15cos^(2)alpha=7 , then the value of cotalpha is

What is acute angle?

If alpha is acute angle and 2sin^(2)alpha+15cos^(2)alpha=7 , then cotalpha equal to

If A is an acute angle and cot A + cosec A = 3 , then the value of sin A is

theta is a positive acute angle and sin theta-costheta=0 , then the value of (sectheta+"cosec"theta) is

If alpha is an acute angle and sinalpha = sqrt((x-1)/(2x)) , then what is tan a equal to ?

If A and B are acute angles and sinA=cosB then A+B=

If cos alpha=tan beta and cos beta=tan alpha where alpha and beta are acute angles then sin alpha

KIRAN PUBLICATION-TRIGONOMETRY -TEST YOURSELF
  1. The value of the expression 2(sin^(6)theta+cos^(6)theta)-3(sin^(4...

    Text Solution

    |

  2. If sectheta+tantheta=sqrt(2),find the value of sintheta.

    Text Solution

    |

  3. If alpha be an acute angle asinalpha-bcosalpha=0 ,what will be the val...

    Text Solution

    |

  4. If sintheta+sin^(2)theta+sin^(3)theta=1, then find the value of cos^(6...

    Text Solution

    |

  5. What is the values of tan ((5pi)/(6))sin((7pi)/(6)) ?

    Text Solution

    |

  6. Evaluate: tan ((13pi)/12)

    Text Solution

    |

  7. The value of sin22(1)/(2) will be

    Text Solution

    |

  8. If costheta=-(1)/(2)andtheta lies in third quadrant ,then what will be...

    Text Solution

    |

  9. The value of cos((pi)/(4)-theta)cos((pi)/(4)-phi)-sin((pi)/(4)-theta)s...

    Text Solution

    |

  10. If tanalpha=(m)/(m+1)andtan beta=(1)/(2m+1), then (alpha+beta)=?

    Text Solution

    |

  11. (sin(x+y))/(sin(x-y))=(a+b)/(a-b), then (tanx)/(tany)=?

    Text Solution

    |

  12. If cosx=-(3)/(5)andpiltxlt(3pi)/(2),then the value of sin2x will be

    Text Solution

    |

  13. If tantheta=(x-y)/(x+y),then value of sintheta is eqaul to (If 0^(@)l...

    Text Solution

    |

  14. What will be the radius of circle in which a central angle of 60^(@) i...

    Text Solution

    |

  15. The value of 2"cos"(pi)/(13)"cos"(9pi)/(13)+"cos"(3pi)/(13)+"cos"(5pi)...

    Text Solution

    |

  16. If tan A=(1-cosB)/(sinB), then tan 2A is equal to

    Text Solution

    |

  17. The length of the shadow of the vertical tower on level ground increas...

    Text Solution

    |

  18. The shadow of a vertical tower becomes 30 metres longer when the altit...

    Text Solution

    |

  19. The angular elevation of the top of a tower from a distant point on th...

    Text Solution

    |

  20. To a man standing at the mid point of the line joining the feet of two...

    Text Solution

    |