Good evening ,
Answer :
A.
x = ±20
Step-by-step explanation:
x² − 1 = 399 ⇔ x²= 400 ⇌ x² = 20² ⇌ x² − 20² = 0 ⇌ (x-20)(x+20) = 0
⇌ x = 20 or x = -20.
:)
<span>m∠CED = 180° − m∠DEB= 90 degrees, by reason corresponding angles of parallel lines are congruent
</span>m∠CFD = 180° − m∠AFD = 90 degrees by reason corresponding angles of parallel lines are congruent
Step-by-step explanation:
angle 1 = 41+65=106°
angle 2 = 112-65=47°
13=3x-x/2
13=5x/2
26=5x
X=5.2
The correct answer to this question is 240
From the image i've seen, the RDC has an angle of 120. So the major arc DC (that passes A and B) has an angle of 240.
So this makes that the measure of the angle of DAC is 240 because of the angle formed by RDC which is 120.
