Question 6 :
If $\displaystyle \sin B=\frac{1}{2}$ what is the value of $\displaystyle 3\cos B-4\cos ^{3}B?$
Question 7 :
If P = cos $\dfrac {\pi } {20} .cos \dfrac {3\pi } {20} .cos\dfrac {7\pi } {20} . cos\dfrac{9\pi } {20} $ & Q = cos$ \dfrac{\pi } {11}. cos\dfrac{2\pi } {11} .cos\dfrac{4\pi } {11} . cos\dfrac {8\pi } {11}. cos \dfrac {16\pi } {11}, then \dfrac {P} {Q} $ is
Question 8 :
The value of $4\cos^{2} \dfrac {\pi}{3} + \sec^{2} \dfrac {\pi}{6} - \sin^{2} \dfrac {\pi}{4}$ is
Question 11 :
If $0<x<\pi$ , and $\cos { x } +\sin { x } =\cfrac { 1 }{ 2 }$, then $\tan { x } $ is -<br><br>
Question 15 :
If $ \displaystyle \sin \Theta +\cos \Theta =\sqrt{2,} and \Theta $ is actual , then $ \displaystyle \tan \Theta $ is equal to
Question 19 :
The value of $\cot 15^{\circ} \cot 20^{\circ} \cot 70^{\circ} \cot 75^{\circ}$ is equal to
Question 20 :
If $\theta$ is in the first quadrant and cos $\theta=\frac{3}{5}$, then the value of $\dfrac{5 tan \theta -4cosec \theta}{5 sec\theta-4cot \theta}$ is<br/><br/>
Question 24 :
Given that $ \displaystyle \cos 50^{\circ}18'=0.6388\ and\ \cos 50^{\circ}42'=0.6334, $ then the possible value of $ \displaystyle \cos 50^{\circ}20' $ is 
Question 25 :
Consider the following statements :<br>1. $1^o$ in radian measure is less than 0.02 radians.<br>2. 1 radian in degree measure is greater than $45^o$ <br>Which of the above statements is/are correct ?
Question 26 :
If $\tan 45^{\circ} = \cot \theta$, then the value of $\theta$, in radians is
Question 27 :
If $ \displaystyle \tan \Theta =2-\sqrt{3}$,then $ \tan \left ( 90^{\circ}-\Theta \right ) $ is equl to
Question 29 :
What is the value of $\dfrac {(\cos 10^{o}+\sin 20^{o})}{(\cos 20^{o}-\sin 10^{o})}$?
Question 30 :
In $\sin \theta  = \dfrac{{ - 1}}{{\sqrt 2 }}\& \;\tan \;\theta $ lies in which quadrant?