Asked by Holly
Q) ABC is an isoceles triangle in which a=150cm, b=c= 249cm. Find the size of each angle of the triangle, correct to the nearest minute. I have drawn a triangle but don't know where to proceed from here?
ty in adv.
ty in adv.
Answers
Answered by
Steve
drop an altitude from angle A to BC and it should be clear that
sin(A/2) = (a/2)/b
that will give angle A, and then
B = C = (180-A)/2
sin(A/2) = (a/2)/b
that will give angle A, and then
B = C = (180-A)/2