Question

Please answer it now

Answer 1

s= 15 (nearest integer), 14.8 (to nearest 10ths)

Explanation:

here you need to apply the cosine rule,

`{s}^(2) = {u}^(2) + {t}^(2) - 2ut \cos(s)`

substituting the values,

u= 13, t=5 and angle S as 60 and solving will give you the answer 14.76 (2 dp)