Pyramid has a base a = 3cm and height in v = 15 cm.

a) calculate angle between plane ABV and base plane
b) calculate angle between opposite side edges.

Correct answer:

α =  84.29 °
β =  11.36 °

Step-by-step explanation:

a=3cm v=15cm  tanα=a/2v=3/215 α=arctan3/215=84.29=84°1722"
 tanβ/2=v2+(a/2)2a β=2arctanv2+(a/2)2a β=2arctan0.0995  β=11.36=11°2154"

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