|sin x + cos x + tan x + cosec x + sec x + cot x |

I have no idea how to deal with the modulus in this expression.

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- Jul 13th 2010, 07:55 PMmanasij7479Finding the minimum value of a trigonometric expression
**|sin x + cos x + tan x + cosec x + sec x + cot x |**

I have no idea how to deal with the modulus in this expression. - Jul 13th 2010, 07:59 PMAckbeet
I think the first thing I would try would be to write the entire function with only sines and cosines. That, I find, sometimes makes things a lot easier to see.

- Jul 13th 2010, 08:10 PMmanasij7479
|sin x + cos x + (1/sin x cos x) +( (sin x + cos x)/sin x cos x) |

..then tried to find the minima of the curve after differentiating , but couldn't figure out how to, in the end. - Jul 13th 2010, 08:12 PMAckbeet
Hmm. You need to be a lot more careful with your parentheses there. What's getting divided by what? Don't write so that people can understand you. Write so that no one can misunderstand you!