___ is the type of farming in which ridges and furrows formed across the slope build a continual series of small barriers to the flowing water which reduces the velocity of runoff and thus reduces soil erosion and nutrient loss
Contour farming is one of the most commonly used agronomic measures for soil and water conservation in hilly agro-ecosystems and sloppy lands. All the agricultural operations viz. plowing, sowing, inter-culture, etc., are practiced along the contour line. The ridges and furrows formed across the slope build a continual series of small barriers to the flowing water which reduces the velocity of runoff and thus reduces soil erosion and nutrient loss.
If sec A + tan A = 3 then the value of cot A is:
Evaluate 3sin x – 4 sin3 x and figure out the correct answer from below option ?
tan 1˚ × tan 2˚× …………………….tan 88˚ × tan 89˚ = ?
If (sinθ+cosθ)/(sinθ-cosθ) = 2, then the value of sin4 θ is
If tan θ + cot θ = 2 where 0 < θ < 90 ; find the value of tan30 θ + cot 29 θ.
If Sin 3A = Cos (A - 46°) where 3A is acute angle, then the Value of A is
sin2 7˚ + sin2 9˚ + sin2 11˚ + sin2 12˚ + ……… + sin2 83˚ = ?
What is the value of cos [(180 – θ)/2] cos [(180 – 9θ)/2] + sin [(180 – 3θ)/2] sin [(180 – 13θ)/2]?