All edges of the base of the following square pyramid are 8 cm long, while all the sloping edges are 12 cm long. The CN edge and DN edge have the equal length.
Find Y, the size of \angle PNM, correct to two decimal places.
Please directly answer the question and provide the final value, e.g., 1, 2.5, 300.
Question: All edges of the base of the following square pyramid are 8 cm long, while all the sloping edges are 12 cm long. The CN edge and DN edge have the equal length.
Find Y, the size of \angle PNM, correct to two decimal places.
Please first conduct reasoning, and then answer the question and provide the final value, e.g., 1, 2.5, 300, at the end.
Question: All edges of the base of the following square pyramid are 8 cm long, while all the sloping edges are 12 cm long. The CN edge and DN edge have the equal length.
Find Y, the size of \angle PNM, correct to two decimal places.