Which two documents are examples of technical writing?

Instruction documents, such as user manuals, and business proposals.

Explanation:

Technical writing refers to a type of writing that is generally used in specific 'technical' fields, such as engineering, informatics, finance, biotechnology, among others.

Writing a technical document requires extensive knowledge of the area and of the technicisms because it aims to inform and explain complex information. For example, instruction documents or user manuals usually contain a large amount of complex data that could be understood and comprehended by people who are familiar with the terms. Also, business proposals tend to contain technicisms that are only used in a specific area, such as specific softwares or technology used by a biotechnology company.