defence exam Indian Navy Fireman/Fire Engine Driver Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If A = sin2θ + cos4θ where 0 ≤ θ < π/2, then which of the following is correct?
1
1 ≤ A ≤ 2
2
3/4 ≤ A ≤ 1
3
13/16 ≤ A ≤ 2
4
3/4 ≤ A ≤ 13/16