View History Bookmarks Window Help algebralab.org Sum and Difference Formulas ns
ID: 3027107 • Letter: V
Question
View History Bookmarks Window Help algebralab.org Sum and Difference Formulas ns MT126-58 Fall 2017 molly lawrence Homework: 7.1 Law of Sines, 7.2 Law of Cosines Score: 0 of 1 pt 20f 20 (1 complete) Solve the triangle. es -100 c- Do not round until the final answer. Then round to the nearest degree as needed.) Do not round until the final answor. Then round to the nearest tenth as needed) (Do not round until the final answer. Then round to the nearest tenth as needed.) Enter your answer in the edit fields and then click Check Answer All parts showing Clear A Let's Practice:Explanation / Answer
7.1.5)
A is not clearly visible. is it 58o or 538o
A=58o
A+B+C=180o
=>58o+44o+C=180o
=>C=180o-58o-44o
=>C=78o
by law of sines a/sinA=b/sinB=c/sinC
=>100/sin58o=b/sin44o=c/sin78o
=>b=100sin44o/sin58o,c=100sin78o/sin58o
=>b=81.9,c=115.3
======================================
A=38o
A+B+C=180o
=>38o+44o+C=180o
=>C=180o-38o-44o
=>C=98o
by law of sines a/sinA=b/sinB=c/sinC
=>100/sin38o=b/sin44o=c/sin98o
=>b=100sin44o/sin38o,c=100sin98o/sin38o
=>b=112.8,c=160.8
please rate if helpful. please comment if you have any doubt
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.