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In △ ABC, a = 30 °, B = 120 ° and B = 5 are known to solve triangles
It's a pleasure for you
To solve a triangle is to find out all the unknowns (edges and angles)~
Firstly, from the sine theorem: a = Sina * B / SINB = 5 √ 3 / 3
The angle c = 180-120-30 = 30 degrees is an isosceles triangle,
So C = a = 5 √ 3 / 3
I hope the landlord can understand this explanation. If you are not clear, you are welcome to ask and exchange questions. I hope it can help the landlord~
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