engineering recuitment DRDO CEPTAM STA B Tier I (Sr. Technical Assistant) Mock Test 2022 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If θ is an acute angle and sinθ = cosθ, then the value of 2 tan2θ + sin2θ - 1 is equal to:
1
1
2
-7
3
3
4
\(\rm \frac{3}{2}\)