railway RRB ALP (CBT 1 + CBT 2 + CBAT) Mock Test Series 2025 (New) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If cos θ + cos2 θ =1, find the value of \(\sqrt{\sin^4θ + \cos^2θ}\).
1
\(\sqrt{2}\) Cos θ
2
2 Cos θ
3
\(\sqrt{2}\) Sin θ
4
2 Sin θ