If$\displaystyle 0<\theta<\frac{\pi}{2}$ show that $\displaystyle sin{\theta}tan{\theta}>2(1-2cos{\theta})$

But i simplify that and get like this $\displaystyle (cos{\theta}-1)^2>0$

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- Oct 21st 2013, 08:33 PMsrirahulanTrig
If$\displaystyle 0<\theta<\frac{\pi}{2}$ show that $\displaystyle sin{\theta}tan{\theta}>2(1-2cos{\theta})$

But i simplify that and get like this $\displaystyle (cos{\theta}-1)^2>0$ - Oct 21st 2013, 08:48 PMSlipEternalRe: Trig
So you are done.