Question 3 :
value of $ \displaystyle (\cos \Theta +\sin \Theta )^{2}+(\cos \Theta -\sin \Theta )^{2} $ is
Question 4 :
If $3\left( \sec ^{ 2 }{ \theta } +\tan ^{ 2 }{ \theta } \right) =5$, then the general value of $\theta $ is -<br><br>
Question 5 :
If $\sin x - \cos x = 0$, then what is the value of $\sin^{4}x + \cos^{4}x$?
Question 6 :
If $sin2x-2cosx=0$ .Then the number of values of $\theta$ lying in $[0, \pi]$ is?
Question 7 :
IF $ \displaystyle \Theta $ is any angle, then $ \displaystyle \sec ^{4}\Theta -\sec ^{2}\Theta $ is equal to
Question 10 :
The value of $ \displaystyle \cos ^{4}\frac{\pi }{4}-\cos ^{4}\frac{\pi }{6}+\sin ^{4}\frac{\pi }{6}+\sin ^{4}\frac{4\pi }{3} $ is
Question 12 :
If $\displaystyle 0\leq a\leq 3, 0\leq b\leq 3$ and the equation $\displaystyle x^{2}+4+3 cos\left ( ax+b \right )=2x$ has at least<br>one solution then the value of $\displaystyle a+b$ is
Question 13 :
The interval for which $2\tan ^{ -1 }{ x } +\sin ^{ -1 }{ \dfrac { 2 }{ 1+x } } $ is independent of $x$ is
Question 15 :
Assertion (A): lf $\tan\alpha, \tan\beta$ are the roots of $x^{2}+px+q=0$, then $\tan(\alpha+\beta)=\dfrac{p}{1-q}$<br/>Reason (R) : lf $\alpha, \beta$ the roots $ax^{2}+bx+c=0$, then $\displaystyle \alpha+\beta=\frac{-b}{a}$ and $\alpha\beta= \dfrac{c}{a}$ <br/>
Question 17 :
If $\tan x - \tan^{2} x = 1$, then the value of $\tan^{4} x - 2 \tan^{3} x - \tan^{2} x+2\tan x +1$ is:
Question 18 :
If $\cos { \alpha } +\cos { \beta } +\cos { \gamma } =\sin { \alpha } +\sin { \beta } +\sin { \gamma } =0$, then the value of $\cos { 3\alpha } +\cos { 3\beta } +\cos { 3\gamma } $ is
Question 19 :
If $\displaystyle \sum_{n = 1}^{2013} \tan \left (\dfrac {\theta}{2^{n}}\right )\sec \left (\dfrac {\theta}{2^{n - 1}}\right ) = \tan \left (\dfrac {\theta}{2^{a}}\right ) - \tan \left (\dfrac {\theta}{2^{b}}\right )$ then $(b + a)$ equals
Question 20 :
Simplify: $\tan5\tan { 30 } \times 4\tan { 85=\_ \_ \_ } $
Question 21 :
If $\sin^{2}x-2\sin x - 1=0$has exactly four different solution in $x\in [0, n\pi]$, then value / values of n is / are $(n \in N)$
Question 23 :
In a $\Delta ABC,\angle A\lt \angle B$. If $\sin A$ and $\sin B$ satisfy the equation $3 \sin x - 4 \sin ^{3}x - k =0$, where $0<K<1$, then find measure of $\angle C$.