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December 18, 2014

December 18, 2014

Posted by **Anonymous** on Saturday, February 16, 2013 at 3:48am.

1+sin2x-cos2x / sin2x+cos2x = tanx

- maths -
**Reiny**, Saturday, February 16, 2013 at 7:36amnot true, so it can't be proven the way you typed it

probably**needs brackets**

counterexample:

let x = 30°

LS = 1 + sin60° - cos60°/sin60° + cos60°

= 1 + √3/2 - (1/2) / (√3/2) + 1/2

= 3/2 + √3/2 - 1/√3

RS = tan 30 = 1/√3 ≠ LS

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