Question

cos(arcsin(4/5))

Answer 1

Ok, so you take the reverse of sin for the ratio given, then take the cos of the resulting degree, you get that?

Answer 2

(or radian)

Answer 3

what is the reverse?

Answer 4

like, if you draw a triangle, I'll get you a picture

Answer 5

so you find the other side, and do the cos ratio

Answer 6

do you understand trig ratios and how they relate to triangles?