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Question 1,Review Exercise

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and the terminal arm of angle is in III quadrant. Then $\sin \theta=$\\ * $\frac{1}{2}$\\ * (b... {2}cosec \theta \theta $ and $\theta=45^{\circ}$, then the value of the given trigonometric identity is:... al side of an angle $'\theta'$ is in IV quadrant, then $x=$\\ * (a) $\cos \theta$\\ * (b) $-\cos \theta$... If $\tan A=\frac{1}{7}$ and $\tan B=\frac{1}{3}$, then $\cos 2A$ is equal to:\\ * (a) $\sin B$ \\ * (b)

Question 3, Exercise 9.1

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$ ** Solution. ** Let $\theta=\frac{\pi}{2} x$. Then $$y=7 \cot \theta$$ Domain of $y=\left\{\theta: ... tan \pi x$. ** Solution. ** Let $\theta=\pi x$. Then $$y=4 \tan \theta$$ Domain of $y=\left\{\theta: ... e{Cosec} 4 x$ ** Solution. ** Let $\theta=4 x$. Then $$y= \operatorname{Cosec} \theta$$ Domain of $y=

Question 2 and 3, Review Exercise

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f $\cos \theta -\sin \theta=\sqrt{2}\sin \theta,$ then show that $\cos \theta+ \sin \theta=\sqrt{2} \cos