Question

using this triangle that is attached
If a=5, b=5 and c=9, find the angles A, B and C. Give your answer in degrees to at least 3 decimal places
A=?
B=?
C=?
using this triangle that is attached
If a=5, b=5 and c=9, find the angles A, B and C. Give your answer in degrees to at least 3 decimal places
A=?
B=?
C=?
@Mathematics

Answer 1

because a=b so result angles A and B are equales so the bisector of angle C part in two part equales the c - so being CM bisector of angle C so than AM = MB =4,5

Answer 2

CM being m so b squared = c1 squared + m squared so 25=20,25 + m2 so
m2 =25-20,25 =4,75 so m= sqrt(4,75) = 2,179
- so right that will be +/- but because one angle realy not can be negativ hence we make calcule just with plus value
now you can writing that sin(A)=sin(B)=m/5 = 2,179/5 = 0,435
sin(C/2)=4,5/5 =0,900 so than sin(C)=2(0,900)=1,800

Answer 3

- hope so much that will be RIGHT,CORRECT