Which equation is correct?

arccsc(x)=1/cos(x)

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).