(C) Given equations are $\cos \theta = \frac{1}{\sqrt{2}}$ and $\tan \theta = -1$ for $\theta \in [0, 2\pi]$.For $\cos \theta = \frac{1}{\sqrt{2}}$,th

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(C) Given equations are $\cos \theta = \frac{1}{\sqrt{2}}$ and $\tan \theta = -1$ for $\theta \in [0, 2\pi]$.For $\cos \theta = \frac{1}{\sqrt{2}}$,the possible values of $\theta$ are $\frac{\pi}{4}$ and $\frac{7\pi}{4}$.For $\tan \theta = -1$,the possible values of $\theta$ are $\frac{3\pi}{4}$ and $\frac{7\pi}{4}$.The common value satisfying both equations is $\theta = \frac{7\pi}{4}$.

Class 11 Mathematics Trigonometrical Equations Mix Examples-Trigonometrical Equations and Inequations, Properties of Triangles, Height and Distance

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The value of $\theta$,satisfying both the equations $\cos \theta = \frac{1}{\sqrt{2}}$ and $\tan \theta = -1$ in the interval $[0, 2\pi]$,is

MHT CET 2022 All MHT CET

A
$\frac{\pi}{4}$
B
$\frac{5\pi}{4}$
C
$\frac{7\pi}{4}$
D
$\frac{3\pi}{4}$

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Trigonometrical Equations

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Mix Examples-Trigonometrical Equations and Inequations, Properties of Triangles, Height and Distance

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The value of $\theta$,satisfying both the equations $\cos \theta = \frac{1}{\sqrt{2}}$ and $\tan \theta = -1$ in the interval $[0, 2\pi]$,is

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