Question

in a figure AB is the tangent of the circle with Centre O if angle DOA =130 degree then find the angle DAB​

Answer 1

Step-by-step explanation:

Description for Correct answer:

According to figure

∠DAC=51∘

∠EOB=180∘−150∘=30∘

OB=OE=radius

∴∠OEB=∠OBE

then

∠OEB+∠OBE+∠EOB=180∘

2∠OBE=180∘−30∘

∠OBE=75∘

∠CBE=180∘−75∘

∠CBE=105∘