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Trigonometric Functions — Maths STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceMathsTrigonometric Functions2 Marks
MCQ
Which of the following equation has no solution?
  • A
    $\sec \theta=23$
  • ✓
    $\cos \theta=\sqrt{2}$
  • C
    $\tan \theta=2019$
  • D
    $\sin \theta=-\frac{1}{5}$
✓

Answer

Correct option: B.
$\cos \theta=\sqrt{2}$
(b) : Since range of $y=\cos x$ is $[-1,1]$.
$\therefore \quad \cos \theta=\sqrt{2}$ is not possible.
$\therefore \cos \theta=\sqrt{2}$ has no solution.

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