Answer:
Given each largest angle is x, then the other angles are x, x, 180 -x, 180 - x
This is because of the properties of isosceles triangle
use cosine rule
a² = b² + c² -(2*b*c*cosA)
If she has finished 20%, she still has 80% to do. So just calculate .8 times 150.
Answer:
Step-by-step explanation:
4.2 seconds
A = a^2
112 = a^2
sqrt 112 = a
sqrt 16 * sqrt 7 = a
4 sqrt 7 = a
so 4 sqrt 7 is the length of each side
