Question

Calcule: Seno 1450, 210, 5pi/6 e cosseno de 315, 1500 e 21pi/4

Answer 1

Oi

sen(1450) = sen(10) = 0.173648

sen(210) = -sen(180 + 30) = -sen(30) = -0.5 

sen(150) = sen(180 - 30) = sen(30) = 0.5

cos(315) = cos(45) = √2/2 

cos(1500) = cos(60) = 1/2 

cos(21pi/4) = -cos(pi/4) = -√2/2