Question

find DC round to the nearest tenth

Answer 1

Answer:

42

we can use trigonometric ratios (cos, sin, tan) to solve this

$cos(54)=AD/20\\20cos(54)=AD\\AD=12$

Using the pythagorean theorum we see that BD is 16

now we can use tan to solve for DC

$tan(28)=16/DC\\DC=16/tan(28)\\DC=30\\30+12=42; AC=42$

Step-by-step explanation:

Answer 2

Step-by-step explanation:

30.53

loooooooooooooooooooooool