Answer:
Step-by-step explanation:
2^2=1.75^2+3^2-2*3*1.75cos x
4=3.0625+9-10.5 cosx
10.5cos x=9-4+3.0625
10.5cosx=8.0625
cos x= 8.0625/10.5≈0.77
x≈40 degrees
I could be wrong but I believe it would be 35.
Answer:
D. 12
Step-by-step explanation:
<A = <C = 50. It's isosceles triangle
So AB = BC
Plug in
4x = 2x + 6
2x = 6
x = 3
AB = 4 (3) = 12
