Question

simplify sec^4A-tan^4A in exponents​

Answer 1

Answer:

$\sec {}^{4} ( \alpha ) - \tan {}^{4} ( \alpha ) = (\sec {}^{2} ( \alpha ) + \tan {}^{2} ( \alpha ) )( \sec {}^{2} ( \alpha ) - \tan {}^{2} ( \alpha ) ) =$

$\sec {}^{2} ( \alpha ) + \tan {}^{2} ( \alpha )$