Teaching UP TGT Mock Test Series 2025 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
যদি 0 < θ < \(\frac{\pi}{4}\) হয়, তাহলে \(\sqrt{1-2 \sin θ \cos θ}\) এর মান কত হবে?
1
cosθ – sinθ
2
sinθ – cosθ
3
±(cosθ – sinθ)
4
cosθ sinθ