Prove the identity. ( cotx + tanx) = csc2x Note that each Statement must be based on a Rule chosen from the Rule menu. To see a detailed description of a Rule, select the More Information Button to the right of the Rule. Statement Rule ( cole + tan) cossin tan cot ]secesc Select Rule 0 Validate Select the Rule X X Algebra Reciprocal Quotient Pythagorean Odd/Even Double-angle O Sum and Difference