Question

Помогите решить 1,2,4

Answer 1

1) sin a = bc/ba

$frac{12}{15} = 0.8$

sin b = ca/ba

$frac{9}{15} = 0.6$

2) tg a= bc/ca

$frac{24}{10} = 2.4$

tg b=

$frac{10}{24}$

4) Ac=15×1,6=24