Top community members
All Wiki Articles Create Wiki Article

Many years me and my friends we were volunteers on my university doing programming classes for young people.

I got main conclusion: Young people are awesome, especially students, because they always bring new and fresh ideas :)
* I loved to do it but my time is limited

  I decided to create something that will help millions of students

Now I am here

co-founder

Math - why cos(0) is equal 1?

0 contributions
1 points

Explaination why cos(0)=1 requires to refer to the function definition.

cos(α) has been defined as:

Cosine function definition.
Caption

Lets suppose that: alpha angle goes to zero (α -> 0) and adjacent side is constant (b = const).

It causes: opposite side goes to zero too (a -> 0) and hypotenuse side goes to adjacent side (h -> b). When angle is equal to 0 and b is equal to h then b divided by h is equal to 1. It means cos(0) is equal to 1 acording to above definition.

cos(0)=1 math explanation
cos(0)=1 math explanation

Simple visualisation is presented on below picture:

Why cos(0) is equal to 0? - explanation
Why cos(0) is equal to 0? - explanation
0 contributions

Suggested wiki articles:

Suggested findings

Let's do the work and have some fun
  • Dirask is online IT community for professionals and hobbyist to share their knowledge and help each other in extraordinary easy way. ❤ 💻 🙂
  • We welcome everyone,
    no matter what the experience,
    no matter how basic the question is,
    we will help you. 👍 ✔ 🦄
Read more