Question

sin10.sin50.sin70 . rút gọn

Answer 1

Answer:

1/8

Step-by-step explanation:

We know that

sin (x) sin (60-x) sin (60+x) = (sin3x)/4

Here, x = 10

So, sin 10 sin 50 sin 70 = (sin 30)/4 = 1/8