Question

SOMEONE PLEASE HELP

I actually need help please don’t answer if you don’t know and don’t say random things in the answers. Can someone explain how to solve this I don’t need the answers I just need to know how to solve

Answer 1

∠D = 18.4°

Explanation:

use the formula

tanФ⁻¹ = y/x

where y = 3

x = 9

plugin values into the formula:

tanФ⁻¹ = y/x

= 3/9

tanФ⁻¹ = 0.3

Ф = inv. tan 0.3

Ф = 18.4°

therefore, the angle D = 18.4°