tolong di jawab kak, dengan cara nya
Penjelasan dengan langkah-langkah:
[tex] = ( \sec {}^{2} (x) - 1) \cos {}^{2} (x) [/tex]
[tex] = ( \frac{1}{ \cos {}^{2} (x) } - 1) \cos {}^{2} (x) [/tex]
[tex] = ( \frac{1}{ \cos(x) } - \frac{ \cos {}^{2} (x) }{ \cos {}^{2} (x) } ) \cos {}^{2} (x) [/tex]
[tex] = ( \frac{1 - \cos {}^{2} (x) }{ \cancel{\cos {}^{2} (x) }} ) \cancel{\cos {}^{2} (x) }[/tex]
[tex] = 1 - \cos {}^{2} (x) [/tex]
[answer.2.content]
