How do you prove trig identities step by step?

Problem Statement

How do you prove trig identities step by step?

Step-by-Step Explanation

Proving trig identities means transforming one side using known identities until it matches the other side.

1. Identify what the question is asking. In Trigonometry, this usually means naming the known quantities, the unknown quantity, and the concept that connects them.
2. Write the relevant definition, rule, or relationship before substituting numbers or manipulating symbols.
3. Work one step at a time and keep units, signs, and restrictions visible.
4. Check whether the answer makes sense in the original context.

Final Answer

Proving trig identities means transforming one side using known identities until it matches the other side. The reliable strategy is to start from the definition, apply the correct rule carefully, and then interpret the result in plain language.