How does Trigonometry help the environment?
Ask not what trigonimetry can do to help the environment. Ask rather what the environment can do to help trigonometry! Apparently Pythagoras prohibited the eating or even touching of beans. This may have been a profound insight into protecting the planet from global warming be reducing human production of methane (which has a much greater effect than C02). Alternatively, he may have just been a religious nutcase who also did a bit of maths..
