Have you tried anything yet?
Using Law of Sines for the ambiguous case: SSA :
Given the triangle with the following sides: A = 25 degrees, a = 8 cm, and b = 15cm , we begin by drawing a "vague triangular diagram":
Step 1: Find the value of h ( this determines how many triangles you will have) :
Step 2: Draw in the side, a, to make an acute angle at B and darken in this triangle.
Step 3: Using Law of Sines, find the missing sides and angles of this triangle :
Step 4: Now you will draw a second triangle below, making an obtuse angle at B. Now find the values of the missing side and angles of this triangle:
Just to get you started - by convention, we use capital letters to denote the vertices/angles of a triangle, and lowercase letters to denote the side lengths. We also use the same letter for sides and angles that are opposite each other, so side "a" is opposite angle "A", etc.