If you know the base and the height...it is
Area = (1/2)base x height
If you know two sides and the included angle between them, it is
Area = (1/2) ab sin θ where a,b are the known sides and θ is the angle between them
There is also a formula if you only know the sides and nothing else....but....it's a little complicated......if this is the case....post back and I'll run through it for you....
If you know the base and the height...it is
Area = (1/2)base x height
If you know two sides and the included angle between them, it is
Area = (1/2) ab sin θ where a,b are the known sides and θ is the angle between them
There is also a formula if you only know the sides and nothing else....but....it's a little complicated......if this is the case....post back and I'll run through it for you....