Question

am nevoie de ajutor sa completez(165)​

Answer 1

Explicație pas cu pas:

a)

$sin(\hat A) = \frac{BC}{AC} \\ cos(\hat A) = \frac{AB}{AC} \\ tg(\hat A) = \frac{BC}{AB} \\ ctg(\hat A) = \frac{AB}{BC}$

b)

$sin(\hat C) = \frac{AB}{AC} \\ cos(\hat C) = \frac{BC}{AC} \\ tg(\hat C) = \frac{AB}{BC} \\ ctg(\hat C) = \frac{BC}{AB}$