Question

An architect drew the sketch below while designing a house roof. The dimensions shown are for the interior of the triangle.
What is the value of $3\cos x$?

Answer 1

The Given Triangle is Isoceleus Triangle

So The Altitude from top Vertex divides the base side into $2$ equal parts resulting each of them to $16$ each

Now,

$\cos x=\frac{16}{24}=\frac{2}{3}$

$⟹3\cos x=3\times \frac{2}{3}=2$