cos(2x) + 4.sin²(x) - 2 = 0
1-2.sin²(x) + 4.sin²(x) - 2 = 0
2.sin²(x)-1 = 0
sin²(x) = 1/2
sin(x) = 1/(√2)
sin(x) = 1/2 . √2
x = 45°, 135°
Jawab:
Penjelasan dengan langkah-langkah:
" Life is not a problem to be solved but a reality to be experienced! "
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cos(2x) + 4.sin²(x) - 2 = 0
1-2.sin²(x) + 4.sin²(x) - 2 = 0
2.sin²(x)-1 = 0
sin²(x) = 1/2
sin(x) = 1/(√2)
sin(x) = 1/2 . √2
x = 45°, 135°
Jawab:
Penjelasan dengan langkah-langkah: