triangle sides=
a= X
b=10cm
c=10cm
Angle a=48 degrees
find x
We can use the Law of Cosines here
x^2 = 10^2 + 10^2 - 2(10)(10)cos (48°)
x^2 = 200 - 200cos(48°)
x = √ [ 200 - 200cos(48°) ] ≈ 8.135
