The discussion revolves around a trigonometry problem involving a 3D pyramid, specifically focusing on calculating an angle (theta) using the cosine law and the Pythagorean theorem. Participants are trying to reconcile their calculations with an answer key that suggests a different angle measurement.
There is ongoing exploration of the problem, with participants providing their calculations and questioning the assumptions made regarding the triangle's configuration. Some have noted discrepancies between their results and the answer key, leading to further inquiry into the problem's setup.
Participants highlight the ambiguity in the diagram, particularly concerning the lengths and angles involved. There is a suggestion that the diagram may not be to scale, which could affect the interpretation of the problem. Additionally, the lack of clarity about which lengths correspond to which points is noted as a potential source of confusion.
I can't be expected to follow that if you keep changing what the letters refer to and don't specify each time.needingtoknow said:c^2 = a^2 + b^2 - 2abcosC
c = 23.7471
h^2 = a^2 + b^2
h = 23.4307
h^2 = a^2 + b^2
h = 20.5183
(23.7471)^2 = (23.4307)^2 + (20.5183)^2 - 2(23.4307)(20.5183)costheta
theta = 65