Question

Answer the question please

Answer 1

a = 2 √13 cm

Explanation:

Here, we want to find the length of BC

To do this, we can use the cosine rule

Thus;

a^2 = b^2 + c^2 - 2BC cos A

= 8^2 + 6^2 - 2(8)(6) cos 60

Mathematically cos 60 = 1/2

= 64 + 36 - 48 = 52

a^2 = √52

a = 2 √13 cm