Answer: to get the variable by itself on one side
Step-by-step explanation:
Answer:
Try this: (2,6)
x=2, y=6
Step-by-step explanation:
Law of cosine:
c² = a² +b² -2ab*cosC.
Because the triangle is equilateral a=b=c=x,
and we can write,
x²=x² +x² -2xx*cosC
x² =2x² -2x²* cos C
-x² = -2x²*cos C
cos C= 1/2,
so m∠C=60⁰.
Because all sides are equal, and across of the equal sides should be equal angles, all angles will be also equal and = 60⁰.
A. 486m3
B. 48m3
C. 288m3
D. 162m3
E. 1200m3
F. 15m3
G. 189m3
H. 72m3
I. 160m3
J. 120m3
K. 297m3
L. 245m3
