How do I begin this equation
Trigonometry:We know that csc x = 1 / sin x and π = 180°;sin 5π/ 6 = sin 150° = 1/2csc 2π / 3 = 1 / sin 120° = 1 / √3/2 = 2 / √3Finally:4 · 1/2 + 7 · ( 2 / √3 )² = 2 + 7 · 4/3 = = 2 + 28/3 = 2 + 9 1/3 = 11 1/3
