Question

if sin(1/2cos^-x)=1, then x​

Answer 1

Answer:

mrk brainliest nd thnks me plss

Step-by-step explanation:

Let cos^-1 (4/5) = A. So, cos A = 4/5

1 - 2 sin^2 A/2 =4/5 or 1 - 4/5 = 2 sin^2 A/2

So sin A/2 = +/- 1/√10.