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Quadrilateral ABCD is inscribed in a circle.
What is the measure of angle A?
Enter your answer in the box.
mZA=
D
A
(2x+9)
B
(3x+1)°
C


i’m so lost please help

Respuesta :

MathPhys

Answer:

77°

Step-by-step explanation:

For a quadrilateral inscribed in a circle, opposite angles are supplementary, meaning they add up to 180°.

(2x + 9) + (3x + 1) = 180

5x + 10 = 180

5x = 170

x = 34

Therefore, the measure of angle A is:

2(34) + 9 = 77°

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