Question

16. In the given figure Ois the centre of the circle
ADB = 30 and ABC =40
is the centre of the circle
Find the measure of
CAB​

Answer 1

LADB=30 Degrees

LABC = 40 Degrees

therefore

L ACB = LADB= 30 Degrees ( Angles in the same segment are equal )

In triangle CAB,

LACB= 30 Degrees

LABC= 40 Degrees

LCAB= ?

LACB+ LABC + LCAB= 180 Degrees ( angle sum property )

30+40+LCAB=180

Therefore LCAB= 180-70

LCAB = 110 Degrees