Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesTrigonometrical ratios of multiple and sub-multiple angles
EasyIf $\tan \frac{\theta}{2} = t$,then $\frac{1 - t^2}{1 + t^2}$ is equal to
- A$\cos \theta$
- B$\sin \theta$
- C$\sec \theta$
- D$\cos 2\theta$
Explore More
Similar Questions
The value of $\cos 15^{\circ} \cos 7.5^{\circ} \sin 7.5^{\circ}$ is
DifficultWBJEE 2016
View SolutionIf $\theta$ is an acute angle and $\sin \frac{\theta}{2} = \sqrt{\frac{x - 1}{2x}}$,then $\tan \theta$ is equal to
Difficult
View SolutionIf $3 \sin \theta = 2 \sin 3 \theta$ and $0 < \theta < \pi$,then $\sin \theta =$
If $\theta$ is any angle,then $\sin^2 \theta \cos^2 \theta =$
Find $\sin \frac{x}{2}, \cos \frac{x}{2}$ and $\tan \frac{x}{2},$ if $\tan x = -\frac{4}{3}$ and $x$ is in quadrant $II$.
Difficult
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo