Question

VALOR DE SENO DE 105

Answer 1

sin 105° = sin (60° + 45°) =
= sin 60°.cos 45° + cos 60°.sin 45° =
= (√3/2).(√2/2) + (1/2).(√2/2) =
= (√3.√2/4) + (√2/4) = √6/4 + √2/4 =
= (√6 + √2)/4

sin 105° = (√6 + √2)/4