Home
Class 11
MATHS
A particle just clears a wall of heig...

A particle just clears a wall of height b at distance a and strikes the ground at a distance c from the point of projection. The angle of projection is (1) `tan^(-1)b/(a c)` (2) `"45"^o` (3) `tan^(-1)(b c)/(a(c-a)` (4) `tan^(-1)(b c)/a`

Promotional Banner

Topper's Solved these Questions

  • SETS

    RD SHARMA ENGLISH|Exercise All Questions|228 Videos

  • SOME SPECIAL SERIES

    RD SHARMA ENGLISH|Exercise All Questions|69 Videos

Similar Questions

Explore conceptually related problems

Let a, b and c be positive real numbers. Then prove that tan^(-1) sqrt((a(a + b + c))/(bc)) + tan^(-1) sqrt((b (a + b + c))/(ca)) + tan^(-1) sqrt((c(a + b+ c))/(ab)) =' pi'

If sqrt(3)+i=(a+i b)(c+i d) , then find the value of tan^(-1)(b//a)+tan^(-1)(d//c)

If sqrt(3)+i=(a+i b)(c+i d) , then find the value of tan^(-1)(b//a) + tan^(-1)(d//c)dot

If sqrt(3)+i=(a+i b)(c+i d) , then find the value of tan^(-1)(b//a)tan^(-1)(d//c)dot

If A +B+C= pi and /_C is obtuse then tan A. tan B is

Prove that : tan^(-1)( (a^3 -b^3)/(1+a^3 b^3)) + tan^(-1)( (b^3 - c^3)/(1+b^3 c^3)) + tan^(-1)( (c^3 - a^3)/(1+c^3 a^3)) = 0

The angle between the curves y^2=x and x^2=y at (1,\ 1) is tan^(-1)4/3 (b) tan^(-1)3/4 (c) 90 (d) 45

Prove that tan^(-1)((a-b)/(1+ab))+ tan^(-1)((b-c)/(1+bc))+tan^(-1)((c-a)/(1+ca))=0 , ab>(-1), bc>(-1), ca>(-1)

In a triangle tan A+ tan B + tan C=6 and tan A tan B= 2, then the values of tan A, tan B and tan C are

Which of the following is greatest? tan1 (b) tan4 (c) tan7 (d) tan10

RD SHARMA ENGLISH-SINE AND COSINE FORMULAE AND THEIR APPLICATIONS-All Questions
  1. In A B C , prove that (a-b^2cos^2C/2+(a+b)^2sin^2C/2=c^2dot

    Text Solution

    |

  2. In a A B C , if a=3,b=5a n dc=7,fin dcos A ,cos Ba n dcos Cdot

    Text Solution

    |

  3. A particle just clears a wall of height b at distance a and strikes...

    Text Solution

    |

  4. A person observes the angle of elevation of the peak of a hill from a ...

    Text Solution

    |

  5. If in a triangleA B C , (2cosA)/a+(cos B)/b+(2cosC)/c=a/(b c)+b/(c a) ...

    Text Solution

    |

  6. In a triangle A B C , if cos A=(sinB)/(2sinC) , show that the triangle...

    Text Solution

    |

  7. In any Delta A B C , prove that: (cosA)/(bcosC+c cosB)+(cosB)/(c cos...

    Text Solution

    |

  8. In any DeltaA B C ,suma(sinB-sin C)= (a) a^2+b^2+c^2 (b) a^2 (c) b...

    Text Solution

    |

  9. In a Delta A B C , ifsinAa n dsinB are the roots of the equation c^2...

    Text Solution

    |

  10. In any A B C , prove that: Delta=(a^2-b^2)/2dot(sinAsinB)/(sin(A-B))

    Text Solution

    |

  11. In any triangle A B C , prove that:Delta=(b^2+c^2-a^2)/(4cotA) .

    Text Solution

    |

  12. In a triangle A B C ,a=4,b=3,/A=60^0 then c is root of the equation c^...

    Text Solution

    |

  13. In any A B C ,2(bc cosA+ ca cosB+ab cosC) =

    Text Solution

    |

  14. In any A B C , the value of 2a csin((A-B+C)/2) is (a)a^2+b^2-c^2 ...

    Text Solution

    |

  15. In a A B C , if (c+a+b)(a+b-c)=a b , then the measure of angel C is p...

    Text Solution

    |

  16. If any triangle A B C , that: (b^2-c^2)/(cosB+cosC)+(c^2-a^2)/(cosC+co...

    Text Solution

    |

  17. In a right angled triangle ABC, write the value of sin^2 A + sin^2 B+ ...

    Text Solution

    |

  18. Prove that, (asin(B-C))/(b^(2)-c^(2)) = (bsin(C-A))/(c^(2)-a^(2)) = ...

    Text Solution

    |

  19. In a A B C , if cosC=(sinA)/(2sinB) , prove that the triangle is isos...

    Text Solution

    |

  20. Problem on sine rule Type:-2 (i)The angle of elevation of the top of t...

    Text Solution

    |