Question

truss is a structure that consists of members organised

into connected triangles so that the overall assembly

behaves as a single object. Trusses are most commonly used

in bridges, roofs and towers.

Consider the line diagram of truss shown above and find the answers to the following questions:

27. What is the length a ?

(a) 30 m (b) 20 m (c) 34.6 m (d) 17.32 m

28. What is the length b ?

(a) 30 m (b) 20 m (c) 34.6 m (d) 17.32 m

29. What is the length c ?

(a) 30 m (b) 20 m (c) 34.6 m (d) 17.32 m

30. What is the length d ?

(a) 30 m (b) 20 m (c) 34.6 m (d17.32m


pls answer for Q29 and Q30​

Answer 1

Solution :-

(i)

→ cos 60° = B/H

→ 1/2 = 10/a

→ a = 20 m (b)

(ii)

→ tan 60° = P/B

→ √3 = b/10

→ b = 10√3

→ b = 10 * 1.732

→ b = 17.32 m (d)

(iii)

→ tan 60° = P/B

→ √3 = c/b

→ √3 = c/10√3

→ c = 10√3 * √3

→ c = 30 m (a)

(iv)

→ cos 30° = B/H

→ (√3/2) = c/d

→ (√3/2) = 30/d

→ d = (60/√3)

→ d = 34.6 m (c)

Learn more :-

The diagram shows two planks are slanted on a vertical wall.

Express cot x in terms of p.

https://brainly.in/question/24608435

Answer 2

Answer:

Step-by-step explanation:

29. 10√3/c= tan 30°

10√3/c = 1/√3

c=30m

30.cos 30°= c/



√3/2=30/d

d=30×2/√3

d=60/√3

d=60×√3/√3×√3

d=60×√3/3

d=20√3

d=34.6m