Question

Two forces of 10kg and 15 kg act at a point. If the angle between them is 30 degree, then find the value of the resultant of the two forces

Answer 1

(resultant force)^2= 10^2+15^2+2×10×15cos30
=100+225+150root 3
=325+150root3
$325 + 150 \times 1.7 = 476.7$
resultant force= approx 22