$(\sin 80^{\circ} + \cos 10^{\circ})(\sin 80^{\circ} - \cos 10^{\circ}) = \ldots \ldots \ldots$

  • A
    $1$
  • B
    $2$
  • C
    $0$
  • D
    $\cos^{2} 10^{\circ}$

Explore More

Similar Questions

यदि $\sin ^{2} 35^{\circ} + \cos ^{2} \theta = 1$ है,तो $\theta = \ldots \ldots \ldots \ldots$ ($^{\circ}$ में)

$\sin^{2} 30^{\circ} - \tan 45^{\circ} + \cos^{2} 60^{\circ} - \cot 90^{\circ}$ का मान ........ है।

सिद्ध कीजिए कि $\sin^{6} \theta + \cos^{6} \theta + 3 \sin^{2} \theta \cos^{2} \theta = 1$.

$\frac{\cos (90^{\circ}- A ) \sin (90^{\circ}- A )}{\tan (90^{\circ}- A )}$ का सरलीकरण ....... है।

यदि $\cos 9 \alpha = \sin \alpha$ और $9 \alpha < 90^{\circ}$ है,तो $\tan 5 \alpha$ का मान ज्ञात कीजिए।

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo