Question

упростить 1-cos^2a/1-sin^2a

Answer 1

$\frac{1 - { \cos(a) }^{2} }{1 - { \sin(a) }^{2} } = \frac{ { \sin(a) }^{2} }{ { \cos(a) }^{2} } = { \tan(a) }^{2}$

Answer 2

Ответ:

$tg^{2}\alpha$

Объяснение:

$\frac{1-cos^{2} \alpha }{1-sin^{2}\alpha} =\frac{sin^{2}\alpha}{cos^{2}\alpha} =tg^{2}\alpha$