Home
Class 11
MATHS
In DeltaABC, angleB=90^(@), angleA=30^(@...

In `DeltaABC, angleB=90^(@), angleA=30^(@), b=20cm`, find a and c.

Text Solution

Verified by Experts

a=10cm, c=`10sqrt(3)` cm
Promotional Banner

Topper's Solved these Questions

  • TRIGNOMETRIC FUNCTIONS

    NAGEEN PRAKASHAN ENGLISH|Exercise EXERCISES 3O|24 Videos

  • TRIGNOMETRIC FUNCTIONS

    NAGEEN PRAKASHAN ENGLISH|Exercise EXERCISES 3P|32 Videos

  • TRIGNOMETRIC FUNCTIONS

    NAGEEN PRAKASHAN ENGLISH|Exercise EXERCISES 3M|8 Videos

  • STRAIGHT LINES

    NAGEEN PRAKASHAN ENGLISH|Exercise Exercise|207 Videos

Similar Questions

Explore conceptually related problems

In DeltaABC, angleA=60^(0), angleB=45^(@) , find a:b .

In DeltaABC, C=90^(@), A=30^(@), b=6 , find the remaining elements of the triangle.

In DeltaABC , a=12 cm, angleB=30^(@) and angleC=90^(@) , then area of DeltaABC=?

In DeltaABC , a=12 m, angleB=30^(@) and angleC=90^(@) , then area of DeltaABC=?

In DeltaABC, angleA=60^(@), angleB=90^(@), angleC=30^(@) . Let H be its orthocentre, then : (where symbols used have usual meanings)

In DeltaABC,angleB=90^(@) , if AB=5cm, BC=12 cm , then find the vlaues of the following : (a) Sin A (b) Cos A (c) cot A (d)cosec C ( e) sec C (f) tan C

In DeltaABC, angleB=90^(@),AB=24cmandAC =26cm then find the values of the following : (i) tanA (ii) cot C (iii) cosC (iv) sinC (v) cosecA (vi) sec A

In DeltaABC,angleB=90^(@)andsinA=(3)/(5) , then find all other trigonometric ratios for angleA .

In triangleABC, angleA = 45^(@) , angleB = 30^(@) , and b=8 . Side a =

In DeltaABC, angleA=x+15^(@),angleB=x and angleC=2x-35^(@) find, each angle of the triangle.

NAGEEN PRAKASHAN ENGLISH-TRIGNOMETRIC FUNCTIONS-EXERCISES 3N
  1. In DeltaABC,b=2sqrt(3), c=3sqrt(2), angleC=60^(@), evaluate angleA.

    Text Solution

    |

  2. In DeltaABC, angleA=60^(0), angleB=45^(@), find a:b.

    Text Solution

    |

  3. In DeltaABC, angleB=90^(@), angleA=30^(@), b=20cm, find a and c.

    Text Solution

    |

  4. If the ratio of angles of DeltaABC is 1:2:3, find the ratio of its sid...

    Text Solution

    |

  5. The angle of a triangle are in the ratio 1 : 2 : 7, prove that the rat...

    Text Solution

    |

  6. In DeltaABC, a=3, b=4 and c=5, evaluate sin2C.

    Text Solution

    |

  7. In DeltaABC, prove that: sinB+sinC gt sinA

    Text Solution

    |

  8. In any DeltaABC, prove that (sinA)/(sin(A+B))=a/c

    Text Solution

    |

  9. In DeltaABC, prove that: acosA+bcosB=(c)cos(A-B)

    Text Solution

    |

  10. In DeltaABC, prove that: asinA-bsinB=csin(A-B

    Text Solution

    |

  11. In DeltaABC, C=90^(@), A=30^(@), b=6, find the remaining elements of t...

    Text Solution

    |

  12. In any triangle A B C prove that: sin((B-C)/2)=((b-c)/a)cosA/2

    Text Solution

    |

  13. In DeltaABC, if a = 2, b = 3, c = 4, prove that cosA=7/8.

    Text Solution

    |

  14. If in DeltaABC, a=4,b=6,c=8 then 2cosA+4cosB+cosC=

    Text Solution

    |

  15. In DeltaABC, if a=6, b=8, c=10, evaluate cos2A.

    Text Solution

    |

  16. In DeltaABC, if b=7, c=24, a=25, find angleA.

    Text Solution

    |

  17. In DeltaABC, a:b:c=15:7:13, find cosA.

    Text Solution

    |

  18. In DeltaABC, if the sides are 7, 4sqrt(3) and sqrt(13) cm, prove tha...

    Text Solution

    |

  19. In DeltaABC, a=x^(2)-1, b=2x+1, angleC=120^(@), find c.

    Text Solution

    |

  20. With usual notations, if in a triangle A B C(b+c)/(11)=(c+a)/(12)=(a+b...

    Text Solution

    |