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December 5, 2016

Homework Help: Math-trig

Posted by Anonymous on Wednesday, December 19, 2012 at 4:33pm.

A stairway runs up the edge of the
pyramid. From bottom to top the stairway
is 92 m long. The stairway makes an angle of 70° to the base edge, as shown. A line from the middle of one of the base edges to the top of the pyramid makes an angle of elevation of 52° with respect to the flat ground. Find the height of the pyramid.

I just can't figure out where 70 degrees comes into play, help is appreciated :)

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