(a) Copy and complete the table of values for \(y = 2\cos x + 3\sin x\) for \(0^\circ \geq x \geq 360^\circ\) x \(0^\circ\) \(60^\circ\) \(120^\circ\) \(180...

Assessment: WAEC SSCE - General Mathematics - 2019 (Essay) Subject: General Mathematics

Question 1 Report

(a) Copy and complete the table of values for \(y = 2\cos x + 3\sin x\) for \(0^\circ \geq x \geq 360^\circ\)

x \(0^\circ\) \(60^\circ\) \(120^\circ\) \(180^\circ\) \(240^\circ\) \(300^\circ\) \(360^\circ\)
y 2.0 - 3.6

(b) Using a scale of 2cm to \(60^\circ\) on the x-axis and 2cm to 1 unit in the y-axis, draw the graph of \(y = 2\cos x + 3\sin x\) for \(0^\circ \geq 360^\circ\)

(c) Using the graph,

(i) Solve \(2\cos x + 3\sin x = -1\)

(ii) Find, correct to one decimal place, the value of y when \(x = 342^\circ\)

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