Question

Plz solve this question the answer is 70​

Answer 1

Answer:

<CBA =70

Step-by-step explanation:

In circle with Centre O,

Seg PC is a tangent and seg AB is a tangent

<PCA =<CAB........ BY theorm between tangent and secant ...... (1)

<ACB is angle in semicircle

<ACB =90........ (2)

<PCA =<PCB +<ACB

110 =<PCB +90

110-90=<PCB

<PCB=20......(3)

Now in triangle ACB

<ACB +<ABC +<CAB =180

90+<CBA+20=180.....(from 1,2,3)

110+<CBA =180

<CBA =180-110

<CBA =70