9709 P13 - Nov 2015 - Q7
575
The diagram shows part of the graph of \(y = a \, \cos x - b\), where \(a\) and \(b\) are constants. The graph crosses the \(x\)-axis at the point \(C(\cos^{-1} c, 0)\) and the \(y\)-axis at the point \(D(0, d)\). Find \(c\) and \(d\) in terms of \(a\) and \(b\).
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