Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesFundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles
EasyIf $\cot (A+B)=0$,then $\sin (A+2 B)$ is equal to
- A$\sin 2 A$
- B$\cos A$
- C$\sin A$
- D$\cos 2 A$
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Similar Questions
If $A, B, C, D$ are the angles of a cyclic quadrilateral taken in order,then $\cos(180^{\circ} + A) + \cos(180^{\circ} - B) + \cos(180^{\circ} - C) - \sin(90^{\circ} - D) =$
Difficult
View SolutionIf $x \sin 45^\circ \cos^2 60^\circ = \frac{\tan^2 60^\circ \csc 30^\circ}{\sec 45^\circ \cot^2 30^\circ}$,then $x = $
Easy
View SolutionWhich of the following trigonometric values are negative?
$I. \sin(-292^{\circ})$
$II. \tan(-190^{\circ})$
$III. \cos(-207^{\circ})$
$IV. \cot(-222^{\circ})$
$I. \sin(-292^{\circ})$
$II. \tan(-190^{\circ})$
$III. \cos(-207^{\circ})$
$IV. \cot(-222^{\circ})$
Find the values of the other five trigonometric functions if $\sin x = \frac{3}{5}$ and $x$ lies in the second quadrant.
Medium
View Solution$\cos 36^{\circ} - \cos 72^{\circ}$ is equal to
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