Answer:
Step-by-step explanation:
In the given circle,
is diameter and
is tangent at point E.
is a semicircular arc.
Since, measure of semicircular arc is 180°
.... (2)
From equations (1) & (2)
By inscribed angle theorem:
By tangent secant theorem:

Answer:
It would be - 72
Step-by-step explanation:
It is because assume the integer as 'a'.
Given, a/9 = -8
That is a = -8 * 9 => -72
Answer:
D. Substitution
Step-by-step explanation:
I don't know how to explain it other than that they substituted the 50° angle into the original equation.