To the sum of the first and last ordinates, add twice the sum of the remaining odd ordinates and four times the sum of all the even ordinates. The total sum thus obtained is multiplied by one third of the common distance between the ordinates and the result gives the required area. This rule of finding the area is called ............

The error in measured length due to sag of chain or tape is known as ............

A deflection angle in a traverse is equal to the ............

Diurnal variation of magnetic declination is ............

Magnetic declination at any place ............

If the radius of a simple curve is R, the length of the chord for calculating offsets by the method of chords produced, …

In a lemniscate curve, the angle between the tangent at the end of the polar ray and the tangent at the commencement of …

A lemniscate curve between the tangents is transitional throughout, if the polar deflection angle of its apex is equal t…

In a tacheometer provided with anallactic lens distance between object glass and vertical axis is 15 cm. Focal length of…