Proving an identity using fundamental... 0/5 Prove the identity. (csc2x-1) sec secx= cotx csc x 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 (csc-1) sec Validate Rule 0.0 □cos□□sin□ 中 Select Rule cot a X □ sec□□ese (口) G Español