Question

If you're good at trig pleaseeee help meee

Find the value of theta to the nearest minute

Answer 1

Explanation:

using sin formula

let third angle=α

`(sin~\alpha )/(7.9) =(sin 18)/(8.4) \\sin \alpha=(7.9)/(8.4) * sin~18\\\alpha=sin^(-1) ((7.9)/(8.4) * sin18)\\\approx 16 ^\circ 54'\\\theta=180-(18+16^\circ 54')\\=180-34^\circ54'\\=145^\circ 06'`