I've been asked by a friend edting a textbook to find the exact dimensions of the Freedom Arches at Nathan Phillips Square. (N43 39'08.23" W79 22'59.63").(adsbygoogle = window.adsbygoogle || []).push({});

I've looked everywhere online and haven't found it. But I'm trying to estimate it from a Google map.

Google Earth shows them to be 300 pixels long at a distance of 456ft. I should be able to calculate that dimension in feet using trig - but for the life of me, I can't figure out how.

I realise that, if I can fond an object of known length on thje map, I'm home free, but that's fraught with pitfalls and is not the only way I should be able to do it.

If I'm trying to calc the height of a triangle, and I know the base length, all I need is the angle. How do I figure out the angle here?

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# Calcing length of object using trig

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