Question : What will be the value of $\cos x \operatorname{cosec} x - \sin x \sec x$?

Question : If $\cos^2x+\cos^4x=1$, then $\tan^2x+\tan^4x$?

Question : The value of tan 25° tan 35° tan 45° tan 55° tan 65° is:

Question : If $\tan\theta-\cot\theta=0$ and $\theta$ is positive acute angle, then the value of $\frac{\tan(\theta+15)}{\tan(\theta-15)}$ is:

Question : If $\theta$ is an acute angle and $\tan \theta+\cot \theta=2$, then the value of $\tan ^{200} \theta+\cot ^{200} \theta$ is: