Question

Calculate the length of edge AD in the triangle-

based pyramid below.
Give your answer to 2 d.p.

Answer 1

Set your calculator to Degree mode.

tan(39°) = 46/DB

DB = 46/tan(39°)

sin(44°) = (46/tan(39°))/AD

AD = 46/(tan(39°)sin(44°)) = 81.77 cm