anasandoval9821 anasandoval9821 07-06-2023 Mathematics contestada Explanation ( 8 Prove the identity. COS.X 1− sinx Statement COSX 1 - sinx 9 Validate secx tanx = 10 = 11 = 12 13 Rule 14 Select Rule 15 Note that each Statement must be based on a Rule chosen from the Rule menu