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You must first identify which sides you are given. If you have been given both sides which are not the hypotenuse (the longest side opposite the ninety degree angle) then you can use the equation:

Have you heard of the BODMAS / BIDMAS rule? 

This rule changes your answer from 42 to 3 instead. that is because this rule says you need to follow a specific order when calculating. It se...

In the affirmative imperative form both the indicative and subjunctive moods are used 

(e.g. habla, hablad - indicative)

(e.g. hable, hablen - subjunctive)

Whe...