subtracting fractions with cotangent and cosecant?

**avatartiger2** · September 12th 2012, 02:19 PM

(1/cot^2 50 degrees) - (1/cos^2 50 degrees) = ?

**a tutor** · September 12th 2012, 02:26 PM

$\cos^2 x +sin^2 x \equiv 1$

$1+\tan^2 x \equiv \sec^2 x$

$\tan^2 x - \sec ^2 x \equiv ...$

**MaxJasper** · September 12th 2012, 04:23 PM

Originally Posted by avatartiger2

(1/cot^2 50 degrees) - (1/cos^2 50 degrees) = ?

$\frac{1}{\text{Cot}(\alpha )^2}-\frac{1}{\text{Cos}(\alpha )^2}=-1$

Thread: subtracting fractions with cotangent and cosecant?