defence exam Indian Navy Fireman/Fire Engine Driver Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
यदि A = sin2θ + cos4θ है जहाँ 0 ≤ θ < π/2 है, तो निम्न में से कौन सही है?
1
1 ≤ A ≤ 2
2
3/4 ≤ A ≤ 1
3
13/16 ≤ A ≤ 2
4
3/4 ≤ A ≤ 13/16