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## Homework Statement

Show that for all [tex]\theta \epsilon (0, \pi)[/tex], the area of a triangle with side lengths a and b with included angle [tex]\theta is A = \frac{1}{2} a b sin \theta[/tex]. (Hint: You need to consider two cases)

## Homework Equations

## The Attempt at a Solution

I have just begun working on this problem.. not really sure where to start.

Does [tex]\theta \epsilon (0, \pi)[/tex] mean that the angle is > than 0 and < than pi?

Am I supposed to show that when the angle is less than or greater than the condition then the equation to find area is not valid?

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