Try this explanation/solution:
a) the system which describes this situation is:

b) the solution of the system made up:

Answer:
The area of triangle is 
Step-by-step explanation:
Let
B -----> the measure of the vertex angle of the isosceles triangle ABC
a and c -----> the two congruent sides of the isosceles triangle ABC
we know that
The area of a triangle applying the law of sines is equal to

we have


substitute in the formula


Answer:
29.24
Step-by-step explanation:
p= 27
b= 48
now finding the value of x,
tanx°= p/b
=27/48
=0.56
now,
x°= tan-¹ 0.56
= 29.24