engineering recuitment NFC Chemical Plant Operator Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
কোণ A = 30° এবং কোণ B = 90° হলে, sin (A + B) = ?
1
\(\frac{2}{{\sqrt 3 }}\)
2
\(\frac{1}{2}\)
3
\(\frac{1}{{\sqrt 2 }}\)
4
\(\frac{{\sqrt 3 }}{2}\)