Asked by ABDULQUADIR ABDULSOMAD OLAITAN
solve this question. ( 3 points, P,Q,R are on a horizontal plane. point Q is on a bearing of 120° and a distance of 80m from P. Point R is on a bearing of 045°, and a distance of 150m from point Q. ¡. calculate correct to 2 significant figure the distance of P from R. ¡¡. Find the perpendicular distance from P to R. Illustrate it with a well labelled diagram.
Answers
Answered by
oobleck
Draw a diagram.
(i) use the law of cosines. The distance
PR^2 = 80^2 + 150^2 - 2*80*150 cos105°
(ii) perpendicular to what? I suspect you want one of the altitudes of triangle PQR. From (i) you now have all 3 sides, so you can find all 3 angles using the law of sines.
(i) use the law of cosines. The distance
PR^2 = 80^2 + 150^2 - 2*80*150 cos105°
(ii) perpendicular to what? I suspect you want one of the altitudes of triangle PQR. From (i) you now have all 3 sides, so you can find all 3 angles using the law of sines.
Answered by
Mexus
solve this question. ( 3 points, P,Q,R are on a horizontal plane. point Q is on a bearing of 120° and a distance of 80m from P. Point R is on a bearing of 045°, and a distance of 150m from point Q. ¡. calculate correct to 2 significant figure the distance of P from R. ¡¡. Find the perpendicular distance from P to R. Illustrate it with a well labelled diagram.
Answered by
Emmanuel oluwamuyiwa
Using cosine rule
I.) q²=150²+80²-
(2×150×80)cos(105)°
q²=190.66~191m
II) perpendicular distance=sin24°×190/sin21°
=170m
I.) q²=150²+80²-
(2×150×80)cos(105)°
q²=190.66~191m
II) perpendicular distance=sin24°×190/sin21°
=170m
Answered by
Chioma
The diagram I need it
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.