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Find the value of cot(π/3)

Pi radians is equal to 180 degrees . Radians are a unit of measurement for angles, just like degrees are, and pi is just the number of radians that makes up that angle. 180 divided by 3 is 60 so we get cot(6...
SD
Answered by Stefan D. • Maths tutor
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Explain the basics of projectile motion

If the projectile is released at an angle, it will have 2 components: 1. horizontal component of motion and 2. vertical component Horizontally, the projectile is assumed to travel at a constant speed (ie 0 a...
AQ
Answered by Aadam Q. • Maths tutor
6682 Views

Why are transition metal ions in water coloured, but sodium in water is not?

The colour of light is determined by its wavelength. White light is made up of electromagnetic radiation (photons) that spans the range 400nm - 700nm, the visible part of the E.M. spectrum. When white light ...
JH
Answered by Jack H. • Chemistry tutor
3103 Views

When do we write a hyphen in adverbs?

We write a hyphen in adverbs when they start with по- and finish with -и. For example when we want to say "In Russian" (по-русски) we should use a hyphen. There is an other case when se must use a ...
AP
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What is "Passato remoto" and when is it used?

Passato remoto is a past tense. It is used when we want to talk about something that happened a long time ago and do not have any connection with the present. This tense can be usually seen in written langua...
AP
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