Question

Take 90 cm as the two sides of a triangle (Line B and C), with an angle of 32 degrees (Degree 'a'). Use the Law of Cosine to find out Line A's length. Round it up to the nearest digit.

Answer 1

I interpret your question to mean

a^2 = 90^2 + 90^2 - 2(90)(90)cos 32°

you do the arithmetic

Answer 2

i do not know