Question

Find the value of b and d

Answer 1

the value of b is 95°
and
the value of d is 45°

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Answer 2

iii)
$\angle ACB$= $\angle ADB$
{As angles in same segment are equal}

so $\angle ACB$= b

Let ua mark P the point where AC and BD intersect.
$\angle APB+ CPB$= 180° {LINEAR PAIR}

→So $\angle CPB$= 60°

In ∆BPC
$\angle B+ P+C$=180°{ASP Of ∆}

25°+60°+b= 180°
b= 180-85

$\bold {b=95°}$