Please help! Find the value of csc (arccos -4/7). Leave your answer in fraction form.?

csc is 1/sin. first find what sin is. sin is y/hypotenuse. use arccos is -4/7 to find y/hypotenuse. so using pathegreon theorem, you find y is root 7^2-4^2 which is root 33. so sin is root 33/7. csc is 1/sin so the answer should be 7/root 33. if you use a calculator, you get the same answer as the guy above.