Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesFundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles
Easy$\sin 15^\circ + \cos 105^\circ = $
- A$0$
- B$2\sin 15^\circ $
- C$\cos 15^\circ + \sin 15^\circ $
- D$\sin 15^\circ - \cos 15^\circ $
Explore More
Similar Questions
यदि $x \sin 45^\circ \cos^2 60^\circ = \frac{\tan^2 60^\circ \csc 30^\circ}{\sec 45^\circ \cot^2 30^\circ}$ है,तो $x = $
Easy
View Solutionएक समकोण त्रिभुज $ABC$ में जहाँ $\angle C = 90^{\circ}$,$AC = BC$ है। यदि $D$,$AC$ का मध्य-बिंदु है,तो $\angle DBC$ का कोटिस्पर्शज्या (cotangent) किसके बराबर है?
Easy
View Solution$\tan 1^\circ \tan 2^\circ \tan 3^\circ \dots \tan 89^\circ$ का मान किसके बराबर है?
$\frac{1-2(\cos 60^{\circ}-\cos 80^{\circ})}{2 \sin 10^{\circ}} = \dots$
सिद्ध कीजिए कि:
$2 \sin ^{2} \frac{\pi}{6}+\csc ^{2} \frac{7 \pi}{6} \cos ^{2} \frac{\pi}{3}=\frac{3}{2}$
$2 \sin ^{2} \frac{\pi}{6}+\csc ^{2} \frac{7 \pi}{6} \cos ^{2} \frac{\pi}{3}=\frac{3}{2}$
Medium
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