ABCDE is a right puramid with a square base(ABCD). The square has side 6cm and the slant edges are of length 10cm. Find
a) the angle beyween the faces EAB and ABCE.
b) tha angle between the face EAB and EBC.
Application of Trigonometry
2008-04-14 5:08 am
回答 (1)
2008-04-16 3:54 am
✔ 最佳答案
a) cos-1 ( 3 / (√(10²+3²)) )b) ( 90° - ans. in (a) ) * 2
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