Question

Slove the triangle.

Answer 1

Step 1:

The angle of the triangle .

The two sides of the triangle is

Find the side by using law of cosines.

Law of cosines: .

Substitute , in above formula.

Step 2:

Find the angle by using law of sines.

Law of sines: .

Consider .

Substitute , in above formula.

.

Angle .

Step 3:

Sum of the three angles in a triangle .

Substitute and in above expression.

.

Solution:

, and