74, 16436, 12618, 108
Substitute secant(x)=1/cos(x) into your equation, and you should be able to solve from there.
sin = opposite over hypotenusecos = adjacent over hypotenusetan = opposite over adjacentcosecant = hypotenuse over oppositesecant = hypotenuse over adjacentcotangent = adjacent over opposite
Acute
That is a icocsles triangle.