Answer:
a. 138 + x = 180
Step-by-step explanation:
Because the angles given are 69+69
which equal 138
and x being the missing angle
finally the total of all angles in a triangle = 180
Answer:
Width =
Length = 
Step-by-step explanation:
We have to first find an equations with the given variables:

Now apply the area format:

Since the area is 108 square inches




Simplify:

Since no number can be negative



Answer:
p = <u>T</u> - a - <u>b</u>
Step-by-step explanation:
Hope that helps, not sure if it is correct though.
Use cos^-1(0.6157) and u might find the answer