Step-by-step explanation:
a circle has 360° , sector APB is 155°, then:
sector CPB = 360° - 155°
= 205°
you are given that sector CPB = ( 4x - 11)°, thus,
(4x - 11) = 205°
4x = 205 + 11
4x = 216 °
x = 216 / 4
x = 54°
have a great day!
