How to find isosceles Triangle perimeter with two equal sides 30?

Using the Sine rule:
(sin 37)/30 = (sin37)/30= (sin 106)/base
So base = 30(sin 106) / (sin 37)
OR base = 30*(0.961) / (0.602)
OR base = 47.890
Perimeter = 30 + 30 + 47.890 = 107.890 ...... answer