Question

Find the value of the pronumeral ‘a’ correct to 1 decimal place.

Answer 1

Explanation:

a = BC - DC

`(60)/(BC)` = tan 28°

BC =
`(60)/(tan28)` ≈ 112.8 m

DC =
`(60)/(tan54)` ≈ 43.6 m

a ≈ 112.8 - 43.6 = 69.2 m