Final answer:
Upon calculating the peak angle of the tent by subtracting the sum of the two 55-degree angles from the total sum of angles in a triangle, we find the answer to be 70 degrees, which is not listed in the provided choices.
Correct option is c) 90 degrees
Step-by-step explanation:
The student asks about determining the angle at the peak of a tent if the angles between the tent walls and the ground are each 55 degrees. Since the tent would form a triangle at the cross-section, and we know that the sum of angles in a triangle is always 180 degrees, we can find the peak angle by subtracting the sum of the two 55-degree angles from 180 degrees.
The calculation would be: 180° - (55° + 55°) = 180° - 110° = 70°.
However, this answer is not listed in the options, implying a possible error in the question or the answer choices provided. Please revise the question or available options.