Question

Вычислить: sin(arcsin3/5+arcsin8/17)

Answer 1

sin α = 3/5       cos α = 4/5
sin β = 8/17       cos β = 15/17
sin (α + β) = sinα · cosβ + sinβ ·cosα = 3/5 · 15/17 + 8/17 · 4/5 =
= 45/85 + 32/85 = 77/85