Answer:
∠a = 45°
Step-by-step explanation:
We are told that △abc and △xyz are congruent.
Thus;
∠a = ∠x
∠b = ∠y
∠c = ∠z
We are given;
∠y = 90°
Thus, ∠b = 90°
Now,we are told that ∠a is one half the size of ∠b.
Thus; ∠a = ½ × ∠b
∠a = ½ × 90
From definition we have:
B² - 4AC < 0
Check for:
B² - 4AC
The equations for which
have complex roots
For A, B and C, use this form of the quadratic:
Ax² + Bx + C = 0
Pi(r)(r)(2) + pi(diameter)(height)
3.14(4)(4)(2)+ 3.14(8)(1.5)
138.16
