Can someone me on all three pleas it'll mean a lot

SohCahToa

sin=o/h
cos=a/h
tan=o/a

For this one on your calculator do 2nd then cos(38/50)
It should look like this:
cos-1(38 / 50)
And then you'll get the answer.

For the second just do this:
cos(58)=x/86
(86)cos58 = x
Multiply 86 and cos(58) in your calculator.

The last one use tangent.

tan(41)=94/x
(x)tan41=94
Divide both sides by tan41
In your calculator do 94/tan(41)