Question

Help with trig homework

Answer 1

225m

Explanation:

the 2 triangles shown are similar by AAA

so their sides are in the same ratio

bridge/15 = 120/8

bridge length = 15*15 = 225m

Answer 2

225 m

Explanation:

Since we know they are similar triangles

8 15

---------- = -----------

120 bridge

Using cross products

8 * bridge = 15* 120

8* bridge = 1800

Divide each side by 8

8/8* bridge = 1800/8

bridge = 225