Home
Class 11
MATHS
If C = 60 ^(@) then show that (b)/...

If `C = 60 ^(@) ` then show that
`(b)/( c^(2) -a^(2)) + (a)/( c^(2) - b^(2)) =0.`

Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise EXERCISE - 9.2 (VERY SHORT ANSWER QUESTIONS)|12 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise EXERCISE - 9.2 ( SHORT ANSWER QUESTIONS)|9 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise EXERCISE - 9.1 ( SHORT ANSWER QUESTIONS)|16 Videos

  • PLANES

    AAKASH SERIES|Exercise ADVANCED SUBJECTIVE TYPE QUESTIONS|30 Videos

  • PROPERTIES OF VECTORS

    AAKASH SERIES|Exercise PRACTICE EXERCISES|55 Videos

Similar Questions

Explore conceptually related problems

If C = 60 ^(@) " then "= ( b)/( c^(2) -a^(2)) + ( a) /( c^(2)- b^(2)) =

(a ) /( b^(2) - c^(2)) + ( c )/( b^(2) - a^(2)) = 0 then B =

If C=60^(@), " then show that"(a)/(b+c)+(b)/(c+a)=1

Show that (a sin (B-C))/( b^(2) - c^(2)) - ( b sin (C-A))/( c^(2) - a^(2)) - ( c sin ( A- B))/( a^(2) -b^(2))

Show that (b+c) cos ((B+C)/( 2)) =a cos ((B-C)/( 2))

AAKASH SERIES-PROPERTIES OF TRIANGLES-EXERCISE - 9.1 ( LONG ANSWER QUESTIONS)
  1. If a:b: c = 7: 8: 9 find cos A : cos B : cos C

    Text Solution

    |

  2. If C= 60 ^(@) " then " ( a) /( b+ c) + ( b) /( c+a) =

    Text Solution

    |

  3. If C = 60 ^(@) then show that (b)/( c^(2) -a^(2)) + (a)/( c^(2) ...

    Text Solution

    |

  4. In DeltaABC, " if" (1)/(a+c)+(1)/(b+c)=(3)/(a+b+c) then show that C=...

    Text Solution

    |

  5. In DeltaABC" show that "suma^(3)cos(B-C)=3abc

    Text Solution

    |

  6. a^(2) cot A + b^(2) cot B + c^(2) cot C "" ( abc)/( R)

    Text Solution

    |

  7. a cos ^(2) "" ( A) /(2) + b cos ^(2) "" ( B)/(2) = c cos ^(2) "" ( C...

    Text Solution

    |

  8. b^(2) sin 2C + C^(2) sin 2B = 2 b sin A

    Text Solution

    |

  9. In a /\ABC if a^(2)+b^(2)+c^(2)=8R^(2) then show that/\ABC is a right ...

    Text Solution

    |

  10. If cos ^(2) A + cos ^(2) B = cos ^(2) C = 1 then show that Delta A...

    Text Solution

    |

  11. If cot.(A)/(2)=(b+c)/(a) find angle B

    Text Solution

    |

  12. Show that cot ""(A)/(2) + cot "" ( B)/(2) + cot "" ( C ) /(2)...

    Text Solution

    |

  13. In DeltaABC,(cot(A//2)+cot(B//2)+cot(C//2))/(cotA+cotB+cotC)=

    Text Solution

    |

  14. Prove that tan.(A)/(2)+tan.(B)/(2)+tan.(C)/(2)=(bc+ca+ab-s^(2))/(Delta...

    Text Solution

    |

  15. In DeltaABC show that (a+b+c)(tan.(A)/(2)+tan.(B)/(2))=2cot.(C)/(2)

    Text Solution

    |

  16. If sin theta = a/(b+c) then show that cos theta = (2sqrt(bc))/(b+c) co...

    Text Solution

    |

  17. If a = (b-c) "sec" theta, then prove that tan theta = (2sqrt(bc))/(b-c...

    Text Solution

    |

  18. If cot.(A)/(2)+cot.(B)/(2)+cot.(C)/(2) are in A.P , then prove that a,...

    Text Solution

    |

  19. If tan ""(A)/(2) = (5)/(6) , tan "" (B)/(2) = ( 20 )/( 37) then s...

    Text Solution

    |

  20. If cot A/2:cot"" B/2: cot"" C/2 = 3:5:7 then show that a:b:c = 6:5:4.

    Text Solution

    |