Question

sen 15° = sen (60°-45°)
ayúdenme.pliss​

Answer 1

Explicación paso a paso:

Sen15 = sen(60-15)

sen(60-45) = sen60cos45 - sen45cos60

sen(60-45) =√3/2×√2/2- √2/2×1/2

sen(60-45) = √2/2(√3/2 - 1/2)

sen(60-45) = √2/2((√3-1)/2)

sen(60-45) = √2(√3-1)/4