Question

Nilai dari bentuk trigonometri cos²60°-sin²60°/2sin²60-1 adalah......

Answer 1

Answer:

$\frac{( { \cos(60) }^{2} - { \sin(60) }^{2} ) }{2 { \sin(60) }^{2} - 1 } \\ we \: know \: that \: { \cos(x) }^{2} - { \sin(x) }^{2} = \cos(2x) and \\ 2 { \sin(x) }^{2} - 1 = \cos(2x) \\ so \\ this \: fraction \: will \: be \\ \frac{ \cos(2(60)) }{ \cos(2(60)) } \\ = 1 \\ hope \: it \: wil \: helpyou \\ please \: mark \: as \: \: brainliest \: please$