Rules for formal letter writing vary somewhat depending on the purpose of the letter. In general, it should contain the date, your contact information, a name, title, and address of the person you are writing to, the body of the letter, a closing, and your signature.
Rules for formal letter writing vary somewhat depending on the purpose of the letter. In general, it should contain the date, your contact information, a name, title, and address of the person you are writing to, the body of the letter, a closing, and your signature.
A letter of resignation would be formal writing.
informal letter, semi-formal letter,formal letter.
The definition of formal writing is basically a kind of letter writing that is sent to a boss or someone that is higher in position than you, and it is a kind of letter that is serious (no joking allowed in a formal writing) and it only sticks to the subject.
A business letter is the most formal type of functional writing.
When writing a formal letter, the action the author of the letter hopes to achieve should be found in the:
To improve the writing of formal letters, the first thing to do is to learn how to properly format a formal letter. There are many guides available to help you write a formal letter such as one at Specimentemplates.
It depends on who you are writing to. Most of the times it is a formal.
yours faithfully
When writing a letter, it is appropriate to use Mr.
The rules of formal writting is, The Style of Formal Writing, Use the active voice, Use literal and concrete language, Be concise, Be careful with placement of descriptive words and phrases. 
respected