Question

I need help with this question please

Answer 1

85 cm

Explanation:

the strut forms a right triangle with the end of the pole.

let the ends of the strut be x from the top of the pole . then

using Pythagoras' identity with 2 legs x and hypotenuse 1.2

x² + x² = 1.2²

2x² = 1.44 ( divide both sides by 2 )

x² = 0.72 ( take square root of both sides )

x =
`√(0.72)` ≈ 0.85 m ( to 2 dec. places )

the ends are 0.85 m = 85 cm from the top of the pole