Guest: what is csc of theta=2.796
Cosec = 1/sine
To remember this I use the fact that the first letter in the usual ratio (sin, tan or cos)is the same as the 3rd letter in the reciprocal ratio. (in this cas the letter is s)
so
cosec =1/sine
cot = 1/tan
sec=1/cos
anyway
if cosec theta = 2.796 then
sin(theta) = 1 / 2.796
you can finish on your calculator, don't forget, you are looking for an angle so you have to press
inv or
2nd
+118654 
