Remark
I would have had the answer a whole lot sooner if I would have read the question properly. The figure in the circle is called a cyclic quadrilateral. It has the odd property that the angles that are opposite each other add up to 180o.
So DEB + DCB = 180o
DEB = 180 - 87
DEB = 93o
Note: The arcs marked 60 and 76 have nothing whatever to do with this problem.
The best I can give you is d 12. because the smaller triangle looks like a dilation of the larger one and BA is 3 so I'm assuming the scale factor is 3 because of the only other number which is 15. Because of this assumption I multiplied 4 by 3. hope this helps
Answer:50 Degrees Fahrenheit
Step-by-step explanation: