2021 SJI P2 Q1

2021 SJI P2 Q1

IB Year 5 | Grade 11
4 marks

By making \(y\) the subject, solve the system of equations, for \(0.6<x<1.3\) and \(0.6<y<1.3\),

\[\sin x+\sin y=1.5\]

\[\cos x+\cos y=1.2.\][4]

Solution:

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Answer:\((x,y)=(0.614,1.18)\) or \((1.18,0.614)\)

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