Prove $\tan^2 20^\circ+\tan^2 40^\circ+\tan^2 80^\circ=33$.
Good trigonometry problem is hard to come by, and when we, the math educator found one, we have to take advantage of it and make full use of it.
Of course, we can rest assured that this trigonometry problem can be tackled using the sum-to-product and product-to-sum identities in a really messy and tedious way. After all, any given math problem can be solved in the most traditional way, isn't it?
Showing posts with label tedious way. Show all posts
Showing posts with label tedious way. Show all posts
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