Question

Suppose a triangle has two sides of length 2 and 3 and that the angle between these two sides is π/3. What is the length of the third side of the triangle?
A. √3
B. √7
C. 2√3
D. 2

Answer 1

we have to use the law if cosine

Answer 2

this would become: x^2=2^2+3^2-2*3*2*(cos pi/3)