### Discussion :: Surveying - Section 1 (Q.No.35)

Danesh said: (Jul 15, 2014) | |

Slope correction= L-D. Here L=l. D=lcos@. So Correction = l-lcos@. = l(1-cos@). = 2lsin^@/2. |

Vamsi Suppu said: (Sep 29, 2014) | |

Slope correction = L-D. L=l. cos@=l/D. D=ICOS@. Correction = L-D. = l-lcos@. = l(1-cos@). = l(2sin@/2). |

Saravanaraja said: (Jun 29, 2017) | |

How D=lcosθ? |

Akki said: (Sep 8, 2018) | |

D means? Give expansion for the formula. |

Priyanka Shah said: (Nov 18, 2018) | |

@All. how comes D=I cosθ. Please explain it. |

Ameiry Hassan said: (Dec 26, 2018) | |

Slope correction = l-D, where l is sloping distance and D horizontal distance, construct a right-angled triangle ABC whose hypotenuse is l, adjacent D and the angle subtended between l and D be theta (θ) solve for D using trigonometric ratio u will get D= lcosθ then recall, Correction = l-D =l-lcosθ = l(1-cos θ) Using the concept of half angle formula 1-cosθ= 2sin^2θ/2 and therefore correction= 2lsin^2(θ/2). |

Kuldeep Kumar said: (Aug 15, 2020) | |

Right answer is A. |

#### Post your comments here:

Name *:

Email : (optional)

» Your comments will be displayed only after manual approval.