Finding the area of a trapezoid using angles and trigonometry

An example is done that shows how to calculate the area of a trapezoid using trigonometry (sin, cos, tan). Starting with the classic formula for the area of a trapezoid, we notice the height is missing. We then notice a right triangle for which we know an angle measure and a side length. This allows us to apply trigonometry, and find the key missing dimension (the height.)
If you listen carefully, you may hear a whining dog in the background. FYI: He is totally fine. He's just embarrassingly demanding treats.

[@ayanoshorts2853]

personally i would have x both sides by h then divide both sides by tan(13)