Question

What is Cos(Sin^-1(0)) ?

Answer 1

1

Explanation:

Hint: `color(red)(sin^(-1)(sint)=t,where,t in[-1,1])`
`x=cos(sin^(-1)(0))`, but, `color(red)(sin0=0)`
`x=cos(color(red)(sin^(-1)(sin0)))`,where, `0in[-1,1]`
`:.x=cos(color(red)(0))=1`.