$\"\"$

\

Observe the figure:

\

The angles of the triangle are $\"\"$ and $\"\"$ .

\

One of sides of the triangle is $\"\"$ .

\

Find the angle $\"\"$

\

Formula: $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Find remaining sides $\"\"$ and $\"\"$ .

\

Apply sines law: $\"\"$ .

\

$\"\"$

\

Consider $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

Cosnider $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

The triangle angle is $\"\"$ .

\

The triangle sides are $\"\"$ and $\"\"$ .