Answer:
B = 31.467 °
Explanation:
Sides:
a = 13 cm
b = 9 cm
c = 17 cm
Angles:
A = 48.939 °
B = 31.467 °
C = 99.5941 °
Other:
P = 39 cm
s = 19.5 cm
K = 57.6818 cm2
r = 2.95804 cm
R = 8.62057 cm
Agenda:
A = angle A
B = angle B
C = angle C
a = side a
b = side b
c = side c
P = perimeter
s = semi-perimeter
K = area
r = radius of inscribed circle
R = radius of circumscribed circle
Formula: SSS is Side, Side, Side
Given the sizes of the 3 sides, you can calculate the sizes of all 3 angles in the triangle. Use The Law of Cosines to solve for the angles. You could also use the Sum of Angles Rule to find the final angle once you know 2 of them.