Jawab ya teman teman di mohon ya pakai carannnya

Jawab ya teman teman di mohon ya pakai carannnya

Jawaban:

$: B. : - 1 \ \$

Penjelasan dengan langkah-langkah:

$sin alpha = dfrac{8}{17} \ sec alpha = frac{17}{ sqrt{ {17}^{2} - {8}^{2} } } \ sec alpha = frac{17}{15} \ \ tan alpha = sin alpha . sec alpha \ tan alpha = dfrac{8}{17}. dfrac{17}{15} \ tan alpha = dfrac{8}{15} \ \ tan beta = dfrac{4}{3} \ cos beta = frac{3}{ sqrt{ {4}^{2} + {3}^{2} } } \ cos beta = frac{3}{5} \ \ dfrac{ cos beta - sec alpha }{ tan alpha } = dfrac{ dfrac{3}{5} - dfrac{17}{15} }{ dfrac{8}{15} } \ dfrac{ cos beta - sec alpha }{ tan alpha } = dfrac{ dfrac{9}{15} - dfrac{8 }{15} }{ dfrac{8}{15} } \ dfrac{ cos beta - sec alpha }{ tan alpha } = - frac{5}{15} times dfrac{15}{8} \ dfrac{ cos beta - sec alpha }{ tan alpha } = - 1$