Find the value of $(\\cos\\theta - i\\sin\\theta)^2$
University of Ilorin MTH101 integral past question
- $\\cos2\\theta - i\\sin2\\theta$
- $\\cos\\frac{\\theta}{2} - i\\sin\\frac{\\theta}{2}$
- $\\cos2\\theta + i\\sin2\\theta$
- $\\cos2\\theta - i\\sin2\\theta$
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