$\"\"$ Step 1: \ \

Solving $\"\"$ triangle: \ \

Find the side of the triangle by using the Law of Sines. \ \

$\"\"$ \ \

The sum of three angles in a triangle $\"\"$ is $\"\"$ . \ \

$\"\"$

$\"\"$ . \ \

Sine rule: \ \

$\"\"$ . \ \

Consider $\"\"$ .

$\"\"$

$\"\"$ .

The length $\"\"$ .

Solution: \ \

The length $\"\"$ . \ \