1.

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

Answer»

-step EXPLANATION:Description for Correct answer:ACCORDING to figure∠DAC=51∘∠EOB=180∘−150∘=30∘OB=OE=radius∴∠OEB=∠OBEthen∠OEB+∠OBE+∠EOB=180∘2∠OBE=180∘−30∘∠OBE=75∘∠CBE=180∘−75∘∠CBE=105∘



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