In a triangle, the lengths of the two larger sides are 10 and 9 respectively. If the angles are in A.P., then the length of the third side can beA. 5 ± v6B. 3v3C. 5D. none of the above
Manvendra Singh chahar , 11 Years ago
Grade Upto college level
1 Answers
SHAIK AASIF AHAMED
Last Activity: 10 Years ago
Hello student,
Let the angles be a-d,a,a+das they are in A.P
sum=180 gives a=60
by applying cosine rule we get cos 60=((x2+100-81)/2*x*10)
after solving we get x=
Thanks and Regards
Shaik Aasif
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