You probably jsut need to use law of cosines in order to solve for angle A

or
To find the area of a triangle, multiply the base by the height, and then divide by 2. The division by 2 comes from the fact that a parallelogram can be divided into 2 triangles. For example, in the diagram to the left, the area of each triangle is equal to one-half the area of the parallelogram.
Answer:
b
Step-by-step explanation:
0.5 that would be half of one if one is greater than the variable M
I really hope this helped ... have a great day !