Discover and read the best of Twitter Threads about #trigonometry

Most recents (3)

Go is a programming language that comes with a rich standard library containing many useful packages and modules. In this, I provide an overview of the standard library modules in Go.
#golang #library
🧵👇
1️⃣. fmt - This package provides formatted I/O with functions like Println, Printf, and Scanf.
#golang #println
🧵👇
2️⃣. net - This package provides a set of network-related functions like dialing a network address, establishing a connection, and listening to a network port.
#network #http #port #golang
🧵👇
Read 21 tweets
#MountEverest has been scaled by many mountaineers but no body knew accurately the height of the highest peak, in the past - but it was calculated accurately by one #Bengali genius #Mathematician . Read the thread to know the fascinating details
In 1831, surveyor-general of India George #Everest was looking for a mathematician who had specialised in spherical #trigonometry to join the #GreatTrigonometricSurvey
#RadhanathSikdar, a student and a master in spherical trigonometry from Kolkata’s Hindu College (now #PresidencyUniversity) was handpicked for the #survey department of the #British government in the 1830s
Read 11 tweets
It's #WinterSolstice, that is the shortest daytime in the Northern Hemisphere. Today's daytime in hours is given by this function
Daytime (Φ) = 24×cos⁻¹(tan(Φ)tan(23.5°))/180°,
where 0°<Φ<66.5° is the latitude measured in degrees.

#Maths #Trigonometry #WinterSolstice2018 Image
Try to derive the above formula by calculating the length of the sunny arc on any given circle of latitude.

And of course, assume that the Earth is a sphere. Image
By the way the #WinterSolstice daytime function
Daytime(Φ)=24×cos⁻¹(tan(Φ)tan(23.5°))/180°
works in the Southern Hemisphere (i.e. for -66.5°<Φ<0) as well. Image
Read 3 tweets

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