In the following figure PB=PD. Find the value of x

In the following figure PB=PD. Find the value of x 3 co. 4 cm and 5 Acute-angled t (d) An J x is

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IT'S NOT CLEAR
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angle B= 180 -120 = 60o ( exterior angle property)
as PBD is an isosceles triangle angle B = exterior part of  angle D = 60
therefore, interior part of angle D = 180 - 60 = 120 
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