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PQRS is a cyclic quadrilateral in which PQ=6cm, QR=2cm, RS=6.5cm, PR=7.2cm and angle PRS=70o. Determine values of x.

      

PQRS is a cyclic quadrilateral in which PQ=6cm, QR=2cm, RS=6.5cm, PR=7.2cm and angle PRS=70o.
fig10019920191658.png
Determine values of x.

  

Answers


Kavungya
x2 = 7.22 + 6.5 – 2(7.2) (6.5) cos 70
= 51.84 + 42.25 – 32.01
= 94.09 – 32.01
= 7.879cm

Kavungya answered the question on September 19, 2019 at 14:00


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