0 votes 0 votes The value of $\cos^{2}45^{\circ} – \sin^{2}15^{\circ}$ is : $\frac{1}{4}$ $\frac{\sqrt{3}}{2}$ $\frac{\sqrt{3}}{4}$ $1$ Quantitative Aptitude nielit2022feb-scientistc + – Lakshman Bhaiya asked Jul 21, 2022 • edited Aug 5, 2022 by Lakshman Bhaiya Lakshman Bhaiya 13.7k points 179 views answer comment Share See all 0 reply Please log in or register to add a comment.