The pleasure math geeks derive at the sight of trigonometric relationships, which in some cases may even lead them to experience an aha! feeling.
Some examples of trig delights are:
i) In any triangle, tan A + tan B + tan C = tan A tan B tan C.
ii) In a triangle, if A + B + C = 90°, then cot A + cot B + cot C = cot A cot B cot C.
iii) For any number x, (sin x)/x = cos x/2 𐄁 cos x/4 𐄁 cos x/8 𐄁 ….
i) In any triangle, tan A + tan B + tan C = tan A tan B tan C.
ii) In a triangle, if A + B + C = 90°, then cot A + cot B + cot C = cot A cot B cot C.
iii) For any number x, (sin x)/x = cos x/2 𐄁 cos x/4 𐄁 cos x/8 𐄁 ….
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by MathPlus March 04, 2017
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