TRIGONOMETRI KELAS 10.... Question from @krizky

alvinteguh Sin²α + 16/25 = 1
sin²α = 9/25
sin α = 3/5
cos α = 4/5
25/169 + cos²β = 1
cos²β = 144/169
cos β = 12/13
sin β = 5/13
maka
sin α . cos β + cos α . sin β
= 3/5 . 12/13 + 4/5 . 5/13
= 36/65 + 20/65
= 56/65

1 votes Thanks 1

izharulhaq78 $cos \alpha = \frac{4}{5} \\ sin \beta = \frac{5}{13}$

$a_ \alpha =3 \\ b_ \alpha =4 \\ c_ \alpha =5 \\ \\ a_ \beta =5 \\ b_ \beta =12 \\ c_ \beta =13$

$sin \alpha cos \beta +cos \alpha sin \beta =?$

$sin \alpha cos \beta +cos \alpha sin \beta \\ ( \frac{a_ \alpha }{c_ \alpha })( \frac{b_ \beta }{c_ \beta })+ (\frac{b_ \alpha }{c_ \alpha })( \frac{a_ \beta }{c_ \beta }) \\ ( \frac{3}{5})( \frac{12}{13})+ (\frac{4}{5})( \frac{5}{13}) \\\frac{36}{65}+\frac{20}{65} \\ \frac{56}{65}$

1 votes Thanks 1

Persamaan direktris parabola y^2 - 6x = 6y +3

X-1/x-2 (lebih kecil sama dengan) x+2/x+1

X+1/x^2 - 4x - 12 < 0/0

Buatin teks akibat-sebab, sebabnya 4 kalimat aja

Asam sulfat memiliki mr ? Dan mol ? Garam dapur memiliki masa ? Beserta cara ya

Cariin soal dan jawaban tentang wirus = pengawetan dan pengolahan bahan nabati dong :3

Yg remedi kecuali no 1 :)

Kelas 10 trigonometri

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