Find \angle \A \C \B.

ICSE Class X Math 2013 Solved Paper - Question 9

In the given figure,

$∠ B A D=65^{∘}, ∠ A B D=70^{∘}, ∠ B D C=45^{∘}$

Question : 9 of 46

Marks: +1, -0

Find

∠ \A \C \B

Solution:

∠ {\ACB}=∠ {\ADB}

(Angles in the same segment of a circle)

∴ \;\; ∠ {\ACB}=45^{∘} \;\; ( ∵ ∠ {\ADB}=45^{∘})

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