SOLUTION: In a triangle PQR, p=5cm, q=7cm and angle PRQ=60 degree. Find the value of r, correct to 2 decimal places
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Question 1133264
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In a triangle PQR, p=5cm, q=7cm and angle PRQ=60 degree. Find the value of r, correct to 2 decimal places
Answer by
ikleyn(52802)
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Use the Law of cosine r =
=
= 6.24 (correct to 2 decimal places.)
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