Write each of the following statements in the form "if then "
(i) Two arcs of a circle are equal in length if they subtend equal angle at the centre
(ii) You can view viruses if you have a microscope
(iii) To get product of two intergers negative it is necessary that both intergers are of different sign

Explanation

To convert the given statements into the "if then" format, we will identify the condition (the "if" part) and the conclusion (the "then" part) for each statement. Let's break it down step by step.

### Solution:

**(i)** Two arcs of a circle are equal in length if they subtend equal angles at the centre.

- **If** two arcs of a circle subtend equal angles at the centre, **then** they are equal in length.

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