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

      

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

Determine values of x.

  

Answers

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

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

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