Target Mathematics

3.77: Trigonometric equation in radians

0606/13/O/N/22 — Question 10 · 5 marks

Solve the equation 2.3cosx+1.2=2.3sinx+1.22.3\,\mathrm{cos}\,x + 1.2 = 2.3\,\mathrm{sin}\,x + 1.2, where xx is in radians, for 1.5x1.5-1.5 \leqslant x \leqslant 1.5.
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