Respuesta :
Answer:
Step-by-step explanation:
cos rule
YZ=sqrt(14^2+12^2-2*14*12*cos98deg)
=19.67
Answer:
Step-by-step explanation:
Given two sides and the angle between, the cosine rule can be used to find the third side.
YZ^2 = XZ^2 + XY^2 - 2*XZ*XY*cos(X)
YZ = (14^2 + 12^2 - 2*14*12*cos98deg)^(1/2)
= 19.666
= 19.67
