JEE MATHEMATICS MCQ: TRIGONOMETRIC EQUATIONS

1 Easy

1 of 1

Understanding +4 | -1

Which of the following is not correct?

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Correct option: C

\sec \theta=\frac{1}{2}

Option C (

\sec \theta=\frac{1}{2}

) is correct because the range of the secant function is

(-\infty, -1] \cup [1, \infty)

, so it cannot be between -1 and 1.

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\left( {x,\,y} \right)

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\left( {\sqrt {{{\sin }^2} - \sin \,\,x + \frac{1}{2}} } \right){2^{{{\sec }^2}y}}\,\, \cdot \,\, \le 1

\mathrm{X}

\theta \rightarrow \frac{\pi}{2}

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\tan \frac{\pi}{5}+2 \tan \frac{2 \pi}{5}+4 \cot \frac{4 \pi}{5}

0 < x < \pi

\cos x+\sin x=\frac{1}{2}

\tan x