Question 815052

You want height to find area.
Take one of the given sides as a base.  Use the 8 m as a base.  
{{{5*sine(53)=height}}}.  If you try {{{5*cosine(53)}}}, this would give just the projection of the 5 meter side onto the base, which is nice, but not what you want.


AREA will be {{{(1/2)(base)(height)=(1/2)8(5sin(53))=20*sin(53)}}}