Higher November 2018 Paper 1 Q23EduqasHigherCurrent spec3 marksExact Trig & Graphs23.(a) On the axes below, sketch the graph of \(y = \sin x\) for \(0^\circ \leqslant x \leqslant 540^\circ\). [2](b) Write down the number of solutions of the equation \(\sin x = 0{\cdot}25\) for \(0^\circ \leqslant x \leqslant 540^\circ\). [1]Mark scheme (a)Mark scheme (b)Mark scheme (a)SchemeMarksCommentsCorrect sine graph over full domain with maxima and minimum at 1 and \(-1\) respectivelyB2B1 for correct shape over full domain but 1 and \(-1\) not markedor for correct roots, maxima and minimum but incorrect shape e.g. ruled sectionsor for the correct curve from \(0^\circ\) to \(360^\circ\) with 1 and \(-1\) markedMark scheme (b)SchemeMarksComments4B1(3)
