Question

40. Look at the figure.



What is the length of side AD? (1 point)
6 cm
8.5 cm
10.4 cm
12 cm

Answer 1

@radar Do you mind looking at this?

Answer 2

12cm*cos(30º) = BD
12cm*sin(30º) = AD

Answer 3

Angle ABD is also a 30 degree angle.

Answer 4

You can use the law of sines.

Answer 5

sin 30 = AD/ 12

Answer 6

That pretty well nails it.

Answer 7

I'm still slightly confused. I haven't learned much about the law of sines yet.

Answer 8

you know what a sine of an angle is?

Answer 9

The sine is opposite/hypotenuse

Answer 10

tha sum of the angles in one triangle is equals 180º

we got 90º+30º+a=180º
a=60º
if a = 60º
a+b = 90º
b=30º