Flag Trigonometry> if angle A=90 2[r+R]=?...
question mark

if angle A=90
2[r+R]=?

Leo Pixie , 11 Years ago
Grade 9
anser 2 Answers
Arun Kumar
Hello Student,

\\R=a/2 \\r=(s-c)tan({A \over 2})=s-c \\=>2(r+R)=2(s-c+c/2) \\=>b+c
Thanks & Regards
Arun Kumar
Btech, IIT Delhi
Askiitians Faculty
ApprovedApproved
Last Activity: 11 Years ago
Leo Pixie
Amazing sir :)
Thanks
Last Activity: 11 Years ago
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