Question

solve (sec+tan)(1-sin)

Answer 1

$( \sec \alpha + \tan\alpha) (1 - \sin \alpha ) \\ \frac{1}{ \cos( \alpha ) } + \frac{ \sin( \alpha ) }{ \cos( \alpha ) } (1 - \sin \alpha ) \\( 1 + \sin \alpha )(1 - \sin \alpha ) \div \cos \alpha \\ {1}^{2} - { \sin }^{2} \alpha \div \cos( \alpha ) \\ { \cos( \alpha ) }^{2} \div \cos( \alpha ) \\ \cos( \alpha )$
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