Question

triangle abc angle b=90° angle a=30° angle c=60° ac=13cm find bc​

Answer 1

Step-by-step explanation:

$cos60 = \frac{bc}{ac} \\ \frac{1}{2} = \frac{bc}{13} \\ \\ bc = \frac{13}{2} \: cm$

Answer 2

Answer:

$bc \frac{13}{2} cm$