Question

15. In an equilateral triangle ABC, if AD I BC then which
of the following is true?
(a) 2AB2 = 3AD2
(b) 4AB2 = 3AD2
(c) 3AB2 = 4AD2
(d) 3AB2 = 2AD
​

Answer 1

Answer:

No,it's not true okay hope you understand

Answer 2

• $\small\bold{\underline{\sf{\blue{solution:-}}}}$

Let AB is a wall and AC is the ladder 15 m long which makes an angle of 60° with the ground

Height and Distance mcq solution image

∴ In ∆ABC, ∠B = 90°

Let height of wall AB = h

Then

sinθ=ABAC⇒sin60∘=h15

⇒3–√2=h15⇒h=153–√2m

∴ Height of the wall =153–√2m