JEE MATHEMATICS MCQ: TRIGONOMETRIC EQUATIONS

1 Easy

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Analyzing +4 | -1

x\,\,\cos \,\,\theta = y\,\,\cos \left( {\theta + \frac{{2\pi }}{3}} \right) = z\,\,\cos \left( {\theta + \frac{{4\pi }}{3}} \right)

, then the value of

\frac{1}{x} + \frac{1}{y} + \frac{1}{z}

is equal to

View answer and explanation

Correct option: C

Option C (0) is correct because the sum of cosines with angles in arithmetic progression is zero when the common difference is

\frac{{2\pi}}{3}

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