Help with trig homework

Question

asked Feb 18, 2019 31.6k views

2 Answers

Nipun Tyagi · Answer 1 · 2019-02-19T00:15:56+0000

Answer:

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

Dimse · Answer 2 · 2019-02-21T15:46:37+0000

Answer:

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