#1**+3 **

Draw your triangle .... calculate hypotenuse via pythagorean theorem

hypotenuse = 4 sqrt 5

csc b = 1/sin b = 1/ (opp/hyp) = hyp/opp = (4 sqrt5)/8 = sqrt5 / 2

Now you try the rest......

Tan A = opp/adj =

cos B = adj/hyp =

I think you have the second one correct !!

ElectricPavlov Jan 27, 2020