A^2 + b^2 + c^2 - ab - bc - ca = 0
a.a + b.b + c.c = a.b + b.c + c.a
equating term by term:-
a = b
b = c
c = a
Therefore a = b = c
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The pigeon can fly 7 kilometers in around 8-9 minutes
Answer:
A
Step-by-step explanation:
To convert degrees to radians
radian measure = degree measure × 
Hence
radian measure = 150° × 
Cancel both 150 and 180 by 30, then
radian measure = 5 ×
= 