That is not a formula, it is the transitive property of equality.
The Transitive Property of Equality.
The formula for finding the angles is called " Pythagorean Thyrum " It states that a squred plus b squared equals c squared so therefore c squared minus a squared will equal b squared. i hope that helps
A = h/2*(a + b) So 2A/h = a + b and therefore, a = 2A/h - b
52500-a = b
It may be called the slope-intercept form of the equation of a straight line.
37
6b = 144 Therefore, b = 144/6 Therefore, b = 24
5b = 8 therefore b = 8/5 therefore b = 1.6
Not sure about the original formula, but one that works is b = a/(2c + 1)
x=(-b+sqrt(b^2-4*a*c))/(2a) and (-b-sqrt(b^2-4*a*c))/(2a) (This is called the quadratic formula)
Y-intercept =(equals) MX+B Y=MX+B
To find this: You know (B+C) = 7. Therefore you know (A+A )= 21 - (B+C). Therefore 21-7 = 14. So now you know (A+A) = 14. So you divide (A+A)/2. This equals 7. Therefore A = 7.