Trigonometric Values
Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.
The Basics
The three primary trigonometric functions are sine, cosine, and tangent.
- Sine (sin): The ratio of the length of the side opposite the angle to the length of the hypotenuse. $$ \sin(\theta) = \frac{\text{Opposite}}{\text{Hypotenuse}} $$
- Cosine (cos): The ratio of the length of the adjacent side to the length of the hypotenuse. $$ \cos(\theta) = \frac{\text{Adjacent}}{\text{Hypotenuse}} $$
- Tangent (tan): The ratio of the length of the opposite side to the length of the adjacent side. $$ \tan(\theta) = \frac{\text{Opposite}}{\text{Adjacent}} $$
Common Angles
Here is a table of trigonometric values for common angles:
Multiple Github Accounts
If you have multiple GitHub accounts, say one for work and one for personal projects, you have likely faced the same question: what is the best way to manage and switch between them?
Fortunately, it can easily be done by using SSH config.
Step 1. Generate ssh key for each account
# Personal account
ssh-keygen -t ed25519 -C "[email protected]"
# Save as: ~/.ssh/id_ed25519_personal
# Work account
ssh-keygen -t ed25519 -C "[email protected]"
# Save as: ~/.ssh/id_ed25519_work
Add the public key to its corresponding GitHub account.