Question
A pole 6 m high casts a shadow 2√3 m long on the
ground. Find the angle of elevationSolution
If ' θ ' is the angle of elevation then here tan θ  = length of Pole/ Shadow = 6/ 2 √3 = 3/√3 = √3 = tan 60 or θ  = 60°
Which mineral is most abundant in the Earth’s crust?
Which content in phosphatic fertilizers required for grade?
…………. are formed from deposits of pre-existing rocks or pieces of once-living organism that accumulate on the Earth's surface.
Isobars are:
Given below are two statements:
Statement I: Orobanche (Broomrape) is a total-root parasitic weed in rapeseed mustard.
Statement II: Strig...
Which plough helps cutting of creeping or spreading grass and inversion?
Which one is cole-crop:Â
A soil has BD 1.35 Mg/mᶾ  and moisture content on weight basis is 10%. Find out moisture content on volume basis.
The scientist who initiated cloud seeding experiments using silver iodide was
Which of the following scientists are credited with the discovery and understanding of the excretory role of Malpighian tubules in insects?
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