clacify the triangle bye side 20 degrees by 10 degrees by 8 degrees

Nope!!!!

of course no triangle is possible with those angles,
they don't even add up to 180

The triangle is an oblique triangle. The area of the triangle can be calculated using the formula A = 1/2ab sin C, where a, b, and C are the side lengths and the angle opposite side C.

A = 1/2(20)(10)sin(8)
A = 100sin(8)
A = 83.9